Loading [MathJax]/jax/output/CommonHTML/jax.js

CBSE Questions for Class 12 Commerce Applied Mathematics Linear Equations Quiz 11 - MCQExams.com

Henry is three times as old as Truman. Two years ago, Henry was five times as old as Truman. How old is Henry now?
  • 4
  • 8
  • 12
  • 16
  • 20
The solution of the system of equations 2x+5yxy=6 and 4x5yxy+3=0 (where x0,y0), respectively is ___________.
  • 1,2
  • 0,0
  • 1,2
  • 1,2
If |x|+x+y=10 and x+|y|y=12 then find the value of 'x+y'.
  • 185
  • 175
  • 85
  • None of these
Some students are divided into two groups A & B. If 10 students are sent from A to B, the number in each is the same. But if 20 students are sent from B to A, the number in A is double the number in B. Find the number of students in each group A & B.
  • 100,80
  • 80,100
  • 110,70
  • 70,110
  • None of these
A sum of Rs.6.25 is made up of 80 coins which are either 10 paise or 5 paise coins. The number of 10 paise and 5 paise coins are _____ and ____ respectively.
  • 45,35
  • 42,38
  • 39,41
  • 37,43
Solve  the following pairs of equations.
3xy=0; x2=0
  • x=2,y=6
  • x=3,y=6
  • x=4,y=6
  • None of these
The graph of the equations x+y=5 and xy=1 will be.....
  • Parallel lines
  • Intersecting lines
  • Lines coincide
  • Concurrent lines
Srikant bought two cows for Rs. 30000. By selling one at a loss of 15% and the other at a gain of 19%, he found that selling price of both cows is the same. Find the cost price of each ( in Rs).
  • 10000,20000
  • 15000,15000
  • 17500,12500
  • 17000,12500
Solve the following pairs of equations.
4xy5=0; x+y5=0
  • (2,3)
  • (3,3)
  • (4,3)
  • None of these
Solve the following pairs of equations.
2x4=0; 4x+y+4=0
  • (2,12)
  • (1,12)
  • (2,12)
  • None of these
Solve the following pairs of equations.
xy=0; y+3=0
  • (3,3)
  • (3,3)
  • (2,3)
  • None of these
Solve  the following pairs of equations.
2x=y+1; x+2y8=0
  • x=2,y=3
  • x=3,y=3
  • x=2,y=2
  • None of these
Solve  the following pairs of equations.
x+y=5; xy=1
  • (3,2)
  • (2,2)
  • (4,2)
  • None of these
Solve the following pairs of equations.
y=2x+1; y+3x6=0
  • (1,3)
  • (2,3)
  • (4,3)
  • None of these
Solve the following puzzles using the equations: 
In a village , the number of women is 89 more than the number of men.The number of children is 400 more than the number of men.If the total population of the village isFind the number of men , women and children. 
  • Men-1500 , Women 1589 , Children 1900.
  • Men-1500 , Women 1600 , Children 1900.
  • Men-1500 , Women 1589 , Children 1200.
  • Men-1400 , Women 1589 , Children 1900.
Solve the following equations by substitution method.
x+3y=10;2x+y=5
  • x=1,y=3
  • x=2,y=3
  • x=1,y=1
  • None of these
Solve the following equations by substitution method.
2x+y=1;3x4y=18
  • x=2,y=3
  • x=2,y=3
  • x=2,y=3
  • None of these
Solve the system of equations 65x33y=97, and 33x65y=1 by substitution method.
  • (2,1)
  • (1,1)
  • (2,2)
  • None of these
Solve the following equations by substitution method.
1x+2y=9;2x+1y=12(x0,y0)
  • x=15,y=12
  • x=25,y=12
  • x=15,y=12
  • None of these
Solve the following equations by substitution method.
3x+1y=7;5x4y=(x0,y0)
  • x=12,y=1
  • x=12,y=1
  • x=12,y=1
  • None of these
Solve following system of equations by elimination method.  x+y2=4,x3+2y=5
  • (3,2)
  • (3,1)
  • (2,2)
  • None of these
Solve the following system of equations by elimination method. 

2x+23y=16,3x+2y=0,x0,y0
  • (6,4)
  • (6,4)
  • (6,4)
  • None of these
Solve following system of equations by elimination method.  x+2y=7,x2y=1
  • (4,32)
  • (4,22)
  • (3,32)
  • None of these
Solve each of the following system of equations by substitution method. 
13x+11y=70,11x+13y=74
  • (2,4)
  • (3,4)
  • (2,2)
  • None of these
A number is 25 times another number. If their sum is 70, Find the numbers.
  • 70 and 50
  • 20 and 30
  • 40 and 50
  • 20 and 50
Solve the following system of equations by substitution method. 

 15x+2y=17,1x+1y=365,x0,y0
  • (5,17)
  • (2,17)
  • (5,27)
  • None of these
Solve following system of equations by elimination method.  3x+y=8,5x+y=10
  • (1,5)
  • (2,5)
  • (1,6)
  • None of these
The sum of two numbers is 25 and their difference is 7, then the numbers are.
  • 20 and 5
  • 18 and 7
  • 15 and 10
  • 9 and 16
For what value of k the system of equation kx+2y=5 and 3x+y=1 has no solution?
  • k=3
  • k=6
  • k6
  • k=4
Solve the following systems of equations using elimination method.
0.5x+0.8y=0.44,0.8x+0.6y=0.5
  • (0.4,0.3)  
  • (0.2,0.3)  
  • (0.4,0.1)  
  • None of these
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 12 Commerce Applied Mathematics Quiz Questions and Answers