Selected MCQ

Current Question
If (815/?)/100 × 28 × 3 − (815×14×6)/100 = 1680, find?
  • A. 2000
  • B. 3000
  • C. 4000
  • D. 6000
Correct Answer: A
Explanation:
Solve a linear Equation.
Related Question 1
Total area of 64 squares is 400 cm². Find the side of the big square.
  • A. 17 cm
  • B. 20 cm
  • C. 23 cm
  • D. 26 cm
Correct Answer: D
Explanation:
Total side calculation.
Related Question 2
Khadija’s age after 1 year is twice her age 10 years ago. Find the present age.
  • A. 19
  • B. 20
  • C. 21
  • D. 22
Correct Answer: C
Explanation:
Solve Equation.
Related Question 3
Three years ago, the average age of 6 members was 19. Find the present age of a boy.
  • A. 1 year
  • B. 1.5 years
  • C. 2 years
  • D. 2.5 years
Correct Answer: A
Explanation:
Total age difference method.
Related Question 4
Pipes A, B, C fill tank in 12, 15, 20 houRs. Find time together.
  • A. 6 hours
  • B. 6⅔ hours
  • C. 7 hours
  • D. 7½ hours
Correct Answer: C
Explanation:
Combined rate method.
Related Question 5
Three numbers are co-prime. The product of the first two is 551. Find the third.
  • A. 75
  • B. 81
  • C. 85
  • D. 89
Correct Answer: C
Explanation:
Factorization approach.