A. 40
B. 50
C. 60
D. 70
✅ The correct answer is option C. 60.
Simple Equations MCQs
The cost of 16 pens and 8 pencils is Rs.352 and the cost of 4 pens and 4 pencils is Rs.96. Find the cost of each pen?
A. Rs.32
B. Rs.28
C. Rs.36
D. Rs.25
✅ The correct answer is option E. None of these.
In a three digit number, the hundred digit is 2 more than the tens digit and the units digit is 2 less than the tens digit. If the sum of the digits is 18, find the number?
A. 975
B. 753
C. 642
D. 684
✅ The correct answer is option E. None of these.
The tens digit of a two-digit number is two more than its unit digit. The two-digit number is 7 times the sum of the digits. Find the units digits?
A. 1
B. 2
C. 3
D. 4
✅ The correct answer is option B. 2.
In a series of six consecutive even numbers, the sum of the second and sixth numbers is 24. What is the fourth number?
A. 8
B. 12
C. 6
D. 14
✅ The correct answer is option B. 12.
the present average age of a couple and their daughter is 35 years. Fifteen years from now, the age of the mother will be equal to the sum of present ages of the father and the daughter. Find the present age of mother?
A. 43 years
B. 40 years
C. 48 years
D. 45 years
✅ The correct answer is option D. 45 years.
Solve the equation for x : 19(x + y) + 17 = 19(-x + y) – 21
A. -1
B. -2
C. -3
D. -4
✅ The correct answer is option A. -1.
The denominator of a fraction is 1 less than twice the numerator. If the numerator and denominator are both increased by 1, the fraction becomes 3/5. Find the fraction?
A. 2/3
B. 3/5
C. 4/7
D. 5/9
✅ The correct answer is option D. 5/9.
Let the numerator and denominator of the fraction be ‘n’ and ‘d’ respectively.
Let the numerator and denominator of the fraction be ‘n’ and ‘d’ respectively.
d = 2n – 1
(n + 1)/(d + 1) = 3/5
5n + 5 = 3d + 3
5n + 5 = 3(2n – 1) + 3 => n = 5
d = 2n – 1 => d = 9
Hence the fraction is : 5/9.
The sum of the digits of a two-digit number is 12. The difference of the digits is 6. Find the number?
A. 93
B. 39
C. 75
D. 48
✅ The correct answer is option E. Either (a) or (b).
The number obtained by interchanging the two digits of a two-digit number is less than the original number by 45. If the sum of the two digits of the number so obtained is 13, then what is the original number?
A. 49
B. 94
C. 83
D. Either (a) or (b)
✅ The correct answer is option B. 94.