CBSE Questions for Class 8 Maths Linear Equations In One Variable Quiz 11 - MCQExams.com

A number when added to its half gives $$36$$. Find the number.
  • $$24$$
  • $$28$$
  • $$20$$
  • $$18$$
The difference between $$\left(\displaystyle\frac{3}{5}\right)^{th}$$of $$\left(\displaystyle\frac{2}{3}\right)^{rd}$$ of a number and $$\left(\displaystyle\frac{2}{5}\right)^{th}$$ of $$\left(\displaystyle\frac{1}{4}\right)^{th}$$ of the same number is $$288$$. What is the number?
  • $$960$$
  • $$850$$
  • $$895$$
  • $$995$$
There are four containers that are arranged in the ascending order of their heights. If the height of the smallest container given in the figure is expressed as $$\dfrac{7}{25} x = 10.5$$cm. Find the height of the largest container.
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  • $$37.5$$cm
  • $$42.5$$cm
  • $$30.5$$cm
  • $$45.5$$cm
A sum of money is divided among Peter, Anita and Janet in the ratio $$13:12:7$$. Calculate how much Anita gets, if the amount Peter gets more than Janet is Rs. $$360$$?
  • Rs. $$180$$
  • Rs. $$640$$
  • Rs. $$720$$
  • Rs. $$480$$
Two numbers are in the ratio $$\displaystyle1\frac{1}{2} : 2\frac{2}{3}$$. But if each number is increased by $$15$$. then the ratio becomes $$\displaystyle1\frac{2}{3} : 2 \frac{1}{2}$$. The numbers are:
  • $$27, 42$$
  • $$36, 48$$
  • $$27, 48$$
  • $$27, 36$$
If a boat goes $$7$$ km upstream in $$42$$ minutes and the speed of the stream is $$3$$ kmph, then the speed of boat in still water is:
  • $$4.2$$ km/hr
  • $$9$$ km/hr
  • $$13$$ km/hr
  • $$21$$ km/hr
Hamid has three boxes of different fruits. Box $$A$$ weights $$2\dfrac{1}{2}\ kg$$ more than Box $$B$$ and Box $$C$$ weights $$10\dfrac{1}{4}\ kg$$ more than Box $$B$$. The total weight of the boxes is $$48\dfrac{3}{4}$$. How many $$kgs$$ does Box A weights?
  • $$15\dfrac {1}{2}\ kg$$
  • $$14 \dfrac {1}{2}\ kg$$
  • $$13\dfrac {1}{2}\ kg$$
  • $$none\ of\ these$$
A crate of mangoes contains one bruised mango for every $$30$$ mangoes in the crate. If $$3$$ out of every $$4$$ bruised mango are considered unsaleable, and there are $$12$$ unsaleable mangoes in the crate, how many mangoes are there in the crate?
  • $$480$$
  • $$500$$
  • $$420$$
  • $$520$$
$$\dfrac{2x-3}{2}-\dfrac{(x+1)}{3}=\dfrac{3x-8}{4}$$
  • $$x=4$$
  • $$x=-2$$
  • $$x=2$$
  • $$x=-4$$
If $$t = x+2$$, find the value of x .If $$2t-7 +\dfrac{3(t-1)}{2}=3$$
  • $$\frac{23}{7}$$
  • $$\frac{3}{7}$$
  • $$\frac{9}{7}$$
  • $$\frac{37}{7}$$

Find the two consecutive odd numbers whose sum is 76.
  •  $$77$$ and $$39$$
  •  $$37$$ and $$39$$
  •  $$37$$ and $$99$$
  •  $$56$$ and $$39$$
The sum of $$2$$ consecutive numbers is $$13$$. Find the numbers.
  •  $$6$$ and $$7$$.
  •  $$5$$ and $$7$$.
  •  $$6$$ and $$5$$.
  •  $$7$$ and $$9$$.
There is $$34000$$ rupees in a beg in the denomination of $$Rs 50,Rs 100,Rs 500$$ and $$Rs 1000$$ currencynotes. If the ratio of the number of these notes is $$2:3:4:1$$ then find the number of notes of $$500$$ denomination.
  • $$20$$
  • $$40$$
  • $$30$$
  • $$50$$
A man travelled two-fifth of his journey by train, one-third by bus, one-fourth by car and the remaining $$3\ km$$ on foot. What is the length of his total journey?
  • $$180$$
  • $$150$$
  • $$120$$
  • $$140$$
The sum of three consecutive even numbers is $$276$$. Find the numbers.
  • $$96,92,94$$
  • $$91,92,94$$
  • $$90,94,98$$
  • $$90,92,94$$
If twelve less than $$3$$ times a number is $$27$$, then the number is ___ 
  • $$29$$
  • $$39$$
  • $$65$$
  • $$13$$
If one fourth, half and one third of the number are added to the number itself, then result is equal to $$25$$. Find the number.
  • $$10$$
  • $$11$$
  • $$12$$
  • $$13$$
If $$\dfrac{1}{8}+\dfrac{1}{9}=\dfrac{x}{10}$$, then $$x$$ is equal to 
  • $$100$$
  • $$1.36$$
  • $$170$$
  • $$2.36$$
If the number exceeds $$\dfrac{2}{3}$$ of itself by $$7$$ ,then 
  • $$21$$
  • $$44$$
  • $$2$$
  • $$7$$
Find the solution to the equation $$\dfrac{4x}{5}-\dfrac{7}{4}=\dfrac{x}{5}+\dfrac{x}{4}$$.
  • $$5$$
  • $$6$$
  • $$7$$
  • $$0$$
Rashmi has a sum of $$Rs. x$$. She spend $$Rs. 800$$ on grocery, $$Rs. 600$$ on cloths and $$Rs. 500$$ on education and received as $$Rs. 200$$ as a gift. How much money (in $$Rs$$) is left with her?
  • $$x - 1700$$
  • $$x - 1900$$
  • $$x + 200$$
  • $$x - 2100$$
Which of the following is a linear equation in one variable?
  • $$2x+1=y-3$$
  • $$2t-1=3t+5$$
  • $$2x-1=x^{2}$$
  • $$x^{2}-x+1=0$$
The sum of two numbers isif one number is double the other find the numbers.
  • $$24,48$$
  • $$25,50$$
  • $$23,46$$
  • None f these 
The sum of three consecutive integers isWhat is the sum of the squares of the first number and the last number? 
  • $$1201$$
  • $$576$$
  • $$1236$$
  • $$1154$$
On increasing the salary of a man by $$25\%$$, it becomes $$Rs. 20000$$. What was his original salary?
  • $$Rs. 15000$$
  • $$Rs. 16000$$
  • $$Rs. 18000$$
  • $$Rs. 25000$$
If $$(2n + 5) = 3(3n - 10)$$, then $$n = ?$$
  • $$5$$
  • $$3$$
  • $$\dfrac{2 }{5}$$
  • $$\dfrac{2}{ 5}$$
State weather the statement is true(T) or false (F):
Two different equations can never have the same answer.
  • True
  • False
The sum of three consecutive multiples of $$7$$ is $$357$$. Find the smallest multiple.
  • $$112$$
  • $$126$$
  • $$119$$
  • $$116$$
The digit in the ten's place of a two-digit number is $$3$$ more than the digit in the units place. Let the digit at the unit's place be $$b$$. Then the number is
  • $$11b+30$$
  • $$10b+30$$
  • $$11b+3$$
  • $$10b+3$$
Linear equation in one variable has
  • Only one variable with any power.
  • Only one term with a variable.
  • Only one variable with power $$1$$.
  • Only constant term.
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