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CBSE Questions for Class 11 Commerce Applied Mathematics Numerical Applications Quiz 9 - MCQExams.com

If 6 painters can complete 9 drawing in 5 hours then
How many painters will make 18 drawing in 5 hours?
  • 11
  • 12
  • 13
  • 14
A single frame of 35 mm film is about three-quarters of an inch long. A film reel holds up to 1000 feet of film. Find the number of reels required for a 2:47:00 (2 hr 47 min) film shot at 24 frames per second.
  • 13
  • 14
  • 15
  • 16
The number of ways four boys can be seated around a round table in four chairs of different colours is:
  • 24
  • 12
  • 23
  • 64
A scanner can print at a rate of 5 pages per minute. Calculate the number of hours will it take to print 300 pages?
  • 0.5
  • 1
  • 1.5
  • 3
If 7 pipes fill a tank in 8 hours, then 4 pipes will fill it in ......... hours
  • 14
  • 16
  • 18
  • 20
If 4 persons do a work in 8 days then how many days it will take if 8 persons do the same work?
  • 4
  • 16
  • 8
  • 32
Find the no. of pipes required to fill the tank in 16 hours.
  • \dfrac {5}{2}
  • \dfrac {7}{2}
  • 7
  • \dfrac {9}{2}
A coastal geologist estimates that a certain countrys beaches are eroding at a rate of  1.5 feet per year. 
According to the geologists estimate, how long will it take, in years, for the countrys beaches to erode 
by 21 feet?
  • 14 years
  • 12 years
  • 8 years
  • 15  years
An 11.2 gb image has been taken of the surface of Jupiter by a camera . A tracking station in Earth can receive data from the spacecraft at a data rate of 3 megabits per second for a maximum of 11 hours each day. If 1 gb equals 1,024 mb, find the maximum number of images that the tracking station can receive from the camera each day. (gb: gigabits, mb: megabits)
  • 3
  • 10
  • 56
  • 144
Jennilina's hobby is to paint the rooms at her college. At top speed, she could paint 5 identical rooms during one 6-hour shift. Find the time it took her to paint each room.
  • 50 minutes
  • 1 hour and 10 minutes
  • 1 hour and 12 minutes
  • 1 hour and 15 minutes
  • 1 hour and 20 minutes
A square pyramid is inscribed in a cube of total surface area of 24 square cm such that the base of the pyramid is the same as the base of the cube. What is the volume of the pyramid?

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  • \dfrac 13
  • \dfrac 83
  • 6
  • 4
  • 8
Computer K can perform x calculations in y seconds and computer L can perform r calculations in s minutes. Find the number of calculations they can perform in t minutes by working together simultaneously.
  • t\left (\dfrac {x}{60y} + \dfrac {r}{s}\right )
  • t\left (\dfrac {60x}{y} + \dfrac {r}{s}\right )
  • t\left (\dfrac {x}{y} + \dfrac {r}{s}\right )
  • t\left (\dfrac {x}{y} + \dfrac {60r}{s}\right )
  • 60t\left (\dfrac {x}{y} + \dfrac {r}{s}\right )
Vasu can run 4 Km in 48 minutes. If Vikas can run twice as fast as Vasu, how many minutes does it take Vikas to run 6 Km?
  • 24
  • 30
  • 36
  • 48
Three men paint a house in 20 days. How many days do 30 men take to do the same?
  • 3 days
  • 2 days
  • 60 days
  • 12 days
If 100! = \displaystyle { 2 }^{ a }{ 3 }^{ b }{ 5 }^{ c }{ 7 }^{ d }..., then
  • a=97
  • \displaystyle b=\frac { 1 }{ 2 } \left( a+1 \right)
  • \displaystyle c=\frac { 1 }{ 2 } b
  • \displaystyle d=\frac { 1 }{ 3 } b
If 20 men working together can finish a job in 20 days, find the number of days taken by 25 men of the same capacity to finish the job.
  • 25
  • 20
  • 16
  • 12
Riya can do \displaystyle \frac{1}{12} of a job in an hour, how many days will she take to complete the job?
  • 12
  • \displaystyle \frac{1}{12}
  • \displaystyle \frac{1}{24}
  • 24
Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes?
  • \displaystyle\frac{5}{11}
  • \displaystyle\frac{6}{11}
  • \displaystyle\frac{7}{11}
  • \displaystyle\frac{8}{11}
What is the average(arithmetic mean) of all the multiples of ten from 10 to 190 inclusive?
  • 90
  • 95
  • 100
  • 105
  • 110
A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs.3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
  • Rs.375
  • Rs.400
  • Rs.600
  • Rs.800
A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year?
  • Rs. 7.98
  • Rs. 8
  • Rs. 8.50
  • Rs. 9
18 men can reap a field in 35 days. For reaping the same field in 15 days, how many men are required?
  • 42
  • 28
  • 32
  • 40
A, B and C can do a piece of work in 20,30 and 60 respectively. In how many days can A do the work if he is assisted by B and C on every third day?
  • 12 days
  • 15 days
  • 16 days
  • 18 days
The amount of time taken to paint a wall is inversely proportional to the number of painters working on the job. If it takes 3 painters 5 days to complete such a job, how many days longer will it take if there are only 2 painters working?
  • 2.5
  • 2
  • 2.4
  • None
In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk?
  • 1
  • \dfrac{1}{40}
  • 40
  • 80
A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:
  • 4 days
  • 6 days
  • 8 days
  • 12 days
What is the average of four tenths and five thousandths?
  • 25002
  • 2502
  • 0.225
  • 0.2025
  • 0.02025
A can copy 75 pages in 25 hours, A and B together copy 135 pages in 27 hours. In what time can B copy 42 pages?
  • 17\ hours
  • 27\ hours
  • 31\ hours
  • 21\ hours
In how many ways 7 men and 7 women can be seated around a round table such that no two women can sit together?
  • (7!)^2
  • 7!\times 6!
  • (6!)^2
  • 7!
A can do a piece of work in 6\dfrac {2}{3} days and B in 5 days. They work together for 2 days and then A leaves B to finish the work alone. How long will B take to finish it?
  • \dfrac {3}{4} days
  • 1\dfrac {1}{2}days
  • 3\ days
  • 7\ days
Two pipes A and B can fill a cistern in 37\displaystyle\frac{1}{2} minutes and 45\ minutes  respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after :
  • 5\ min
  • 9\ min
  • 10\ min
  • 15\ min
A pump can fill a tank with water in 2\ hours. Because of a leak, it took 2\displaystyle\frac{1}{3}\ hours to fill the tank. The leak can drain all the water of the tank in.
  • \displaystyle 4\frac{1}{3}\ hrs
  • \displaystyle 7\ hrs
  • \displaystyle 8\ hrs
  • \displaystyle 14\ hrs
Which of the following is correct?
  • When the positions are numbered, then the circular permutations are treated as a linear arrangement.
  • In linear arrangements, it does not make difference whether the positions are numbered are not.
  • Both A and B
  • None of these.
A cistern has a leak which would empty it in 8 hours. A tap is turned on which admits 6 litres a minute into the cistern and is now emptied in 12 hours. How many litres does the cistern hold?
  • 8640
  • 8500
  • 4320
  • 60\ hours
A is 50\% as efficient as B. C does half of the work done by A and B together. If C alone does the work in 40 days, then A, B and C together can do the work in 
  • \displaystyle 15\frac{1}{3} days
  • 15 days
  • 13 days
  • \displaystyle 13\frac{1}{3} days
In a class of 100 students there are 70 boys whose average marks in a subject are 75. If the average marks of the complete class is 72, then what is the average of the girls?
  • 73
  • 65
  • 68
  • 74
The length of the base of a square pyramid is 2\ cm and the height is 6\ cm. Calculate the volume.
  • 8\ cm^3
  • 6\ cm^3
  • 4\ cm^3
  • 2\ cm^3
A regular square pyramid is 3 m height and the perimeter of its base is 16 m. Find the volume of the pyramid.
  • 1212 cu. m
  • 1414 cu. m
  • 1616 cu. m
  • 1818 cu. m
How many seating arrangements are possible with 8 people around a round table?
  • 5040
  • 8!
  • 7!
  • 720
Twelve friends go out for a dinner to UTSAV restaurant. There are two circular tables one with 7 chairs and one with 5 chairs. In how many ways can the group settle down themselves for dinner?
  • \dfrac{12!}{7!\times5!}
  • \dfrac{12!}{35}
  • 12!
  • 12! 5! 7!
The Arithmetic mean of integers from -5 to 5 is
  • 3
  • 0
  • 25
  • 10
If n books can be arranged on an ordinary shelf in 720 ways, then in how many ways an these books be arranged in a circular shelf ? 
  • 120
  • 720
  • 360
  • 60
The Arithmetic mean of all the factors of 24 is
  • 8.5
  • 5.67
  • 7
  • 7.5
The mean of first 5 whole numbers is
  • 2
  • 2.5
  • 3
  • 0
Two workers A and B are engaged to do a piece of work. Working alone, A takes 8 hours more to complete the work than if both worked together. On the other hand, working alone, B would need 4\displaystyle\frac{1}{2} hours more to complete the work than if both worked together. How much time would they take to complete the job working together?
  • 4 hours
  • 5 hours
  • 6 hours
  • 7 hours
If on the 15th September 2008 was a Friday. Then which day will be on 15th September 2009
  • Sunday
  • Friday
  • Thursday
  • Saturday
There are exactly twelve Sundays in the period from January 1 to March 31 in a certain year. Then the day corresponding to February 15 in that year is?
  • Tuesday
  • Wednesday
  • Thursday
  • Not possible to determine from the given data
If 15th August 2011 was Tuesday, then what day of the week was it on 17th September, 2011?
  • Thursday
  • Friday
  • Saturday
  • Sunday
A and B can do a piece of work in 6 days and A alone can do it in 9 days. The time take by B alone to do the work is _________.
  • 18 days
  • 15 days
  • 12 days
  • \displaystyle 7\frac{1}{2} days
In how many ways a garland can be made from exactly 10 flowers
  • 10!
  • 9!
  • 2(9!)
  • \dfrac{9!}{2}
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Practice Class 11 Commerce Applied Mathematics Quiz Questions and Answers