Selected MCQ

Current Question
25 men consume 250 kg of wheat in 20 days. How much will 20 men consume in same time ____.
  • A. 300
  • B. 200
  • C. 250
  • D. 350
Correct Answer: C
Explanation:
Direct proportion.
Related Question 1
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 2
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 3
Two boys walk at 5 km/h and 5.5 km/h. Time difference after same distance is ____.
  • A. 17 hr
  • B. 14 hr
  • C. 12 hr
  • D. 19 hr
Correct Answer: A
Explanation:
Relative speed difference.
Related Question 4
The simple interest on Rs. 49500 for 3 years is Rs. 17820. What is the compound interest on the same sum and time at the same rate?
  • A. Rs. 20043.94
  • B. Rs. 18654.81
  • C. Rs. 20264.46
  • D. Rs. 19612.41
Correct Answer: A
Explanation:
First, find the rate from SI, then apply the CI formula to get Rs. 20043.94.
Related Question 5
P, Q, and R take 24, 6, and 12 days, respectively. Time together is ____.
  • A. 2
  • B. 3 3/7
  • C. 4¼
  • D. 5
Correct Answer: B
Explanation:
Sum of rates gives 3 3/7 days.