Selected MCQ

Current Question
8 men can dig a pit in 20 days. If a man works 1.5 times as much as a boy, the number of days required by 4 men and 4 boys ____.
  • A. 12 days
  • B. 16 days
  • C. 18 days
  • D. 20 days
Correct Answer: B
Explanation:
Convert men into boy equivalents.
Related Question 1
An officer works maximum days. What is the number of days?
  • A. 3
  • B. 4
  • C. 5
  • D. 6
Correct Answer: A
Explanation:
Constraint-based calculation.
Related Question 2
12 children take 16 days to finish work. Time for the same work with a different number is ____.
  • A. 3 days
  • B. 4 days
  • C. 6 days
  • D. 8 days
Correct Answer: C
Explanation:
Work is inversely proportional.
Related Question 3
Pipes A, B, C fill tank in 12, 15, 20 houRs. If A alone works, time required is ____.
  • A. 6 hrs
  • B. 6⅔ hrs
  • C. 7 hrs
  • D. 7½ hrs
Correct Answer: C
Explanation:
Based on the given combination.
Related Question 4
The tens digit of a two-digit number is 2 more than the units digit. The number is 7 times the sum of its digits. Find the units digit.
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Correct Answer: B
Explanation:
Let the unit digit = x, solve Equation.
Related Question 5
If one number is 3 times another and their sum is 80, the numbers are ____.
  • A. 20 and 60
  • B. 25 and 55
  • C. 30 and 50
  • D. 15 and 65
Correct Answer: A
Explanation:
Let x + 3x = 80 → x = 20.