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CBSE Questions for Class 12 Commerce Applied Mathematics Linear Equations Quiz 3 - MCQExams.com

Solve the following simultaneous equations:
37x+29y=13;29x+37y=53
  • x=1, y=4
  • x=3, y=1
  • x=2, y=3
  • x=1, y=2
Find the values of the x+y and xy from the examples given below without solving for x and y

4x+3y=24;3x+4y=25
  • 7 , 1
  • 1 , 7
  • 1 , 7
  • 7 , 1
Find the values of the x+y and xy from the examples given below without solving for x and y

7x5y=1;5x7y=11
  • 1, 5
  •    1, 5
  •     5,   1
  • 5,   1
Solve the following simultaneous equations.
3x+4y=18;4x+3y=17
  • x=2, y=3
  • x=2, y=5
  • x=4, y=3
  • x=2, y=3
Solve the following simultaneous equations:
15x17y=28;15y17x+36=0
  • x=3, y=1
  • x=3, y=1
  • x=6, y=2
  • x=2, y=3
Solve following pair of equations by equating the coefficient method:
2xy=9
3x7y=19
  • x=2 , y=1
  • x=4 , y=1
  • x=3 , y=2
  • x=7 , y=8
Solve the following simultaneous equation:
4x+5y=10;5x+4y=17

  • x=3y=2
  • x=1y=4
  • x=0y=3
  • x=5y=2
Solve the given pair of equations by substitution method:
x+5y=18
3x+2y=41
  • (13,1)
  • (1,3)
  • (12,17)
  • (9,16)
Solve the given pair of equations by substitution method:
x+y=11
xy=3
  • (4,6)
  • (3,11)
  • (4,7)
  • (6,2)
Solve the given pair of equations by substitution method:
4ab=10
2a+3b=12
  • a=0,b=5
  • a=7,b=6
  • a=1,b=7
  • a=3,b=2
Solve following pair of equations by equating the coefficient method:
8x=5y
13x=8y+1
  • x=3 and y=1
  • x=5 and y=8
  • x=6 and y=2
  • x=9 and y=5
Solve the given pair of equations by substitution method:
x4y=8
x2y=0
  • (2,1)
  • (7,6)
  • (8,4)
  • (3,6)
Solve the given pair of equations by substitution method:
2a+3b=6
3a+5b=15
  • a=3,b=2
  • a=15,b=12
  • a=8,b=15
  • a=7,b=3
Solve the following pairs of equations:
x+14=23(12y)

2+5y3=x72
  • x=8,y=1
  • x=3,y=1
  • x=7,y=1
  • x=9,y=1
Solve the given pair of equations by substitution method:
x+y=0
yx=6
  • (2,7)
  • (3,3)
  • (4,9)
  • (6,2)
Solve the following pair of simultaneous equations:
x3+x+y6=3;y3xy2=6
  • x=2,y=5
  • x=7,y=4
  • x=6,y=3
  • x=3,y=9
Solve the following pair of simultaneous equations:
4x3y=8
3x4y=1
  • x=3,y=1
  • x=5,y=4
  • x=4,y=2
  • x=7,y=6
Solve the following pair of simultaneous equations:
8a7b=1
4a=3b+5
  • a=8,b=9
  • a=3,b=8
  • a=7,b=6
  • a=1,b=1
Solve the following pair of linear (simultaneous) equations by the method of elimination: 
y=4x7
16x5y=25
  • x=32,y=6
  • x=52,y=3
  • x=74,y=2
  • x=92,y=0
Solve the following pair of simultaneous equations:
5x6y=8
7y15x=9
  • (1 , 3)
  • (6 , -1)
  • (-2 , -3)
  • (3 , -5)
Solve following pair of equations by equating the coefficient method:
3x7y=35
2x+5y=4
  • x=5,y=1
  • x=4,y=1
  • x=5,y=7
  • x=7,y=2
Solve following pair of equations by equating the coefficient method:
x+2y=11
2xy=2
  • x=3,y=4
  • x=5,y=4
  • x=1,y=1
  • x=6,y=4
Solve the following pair of simultaneous equations:
x3=y2;2x3y2=2
  • (3,4)
  • (1,9)
  • (6,4)
  • (3,8)
Solve the following pair of simultaneous equations:
x2y3=2;x5+y3=15
  • x=2427,y=3037
  • x=1213,y=1023
  • x=1676,y=1343
  • x=2227,y=121317
Solve for x and y:
4x=17xy8
2y+x=2+5y+23
  • x=4;y=4
  • x=1;y=6
  • x=6;y=3
  • x=2;y=7
Solve the following pair of simultaneous equations:
3x+5(y+2)=1
3x+8y=0
  • (8,3)
  • (4,9)
  • (1,3)
  • (0,9)
Solve the following pair of simultaneous equations
3x+2y=1
6y=5(1x)
  • x=2 and y=2.5
  • x=1 and y=3
  • x=6 and y=1.5
  • x=7 and y=4
Solve the following pair of simultaneous equations:
x12+y+15=415;x+y3=y1
  • x=7,y=5
  • x=2,y=4
  • x=0,y=6
  • x=5,y=3
Find two numbers such that twice of the first added to the second gives 21, and twice the second added to the first gives 27.
  • 5 and 11
  • 9 and 16
  • 3 and 18
  • 3 and 17
A man's age is three times that of his son and in twelve years he will be twice as old as his son would be. What are their present ages?
  • Present age of man is 60 years and

    Present age of son is 20 years
  • Present age of man is 45 years and

    Present age of son is 15 years
  • Present age of man is 54 years and

    Present age of son is 18 years
  • Present age of man is 36 years and

    Present age of son is 12 years
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