Selected MCQ

Current Question
True discount on Rs. 1760 at 12% is Rs. 160. Find time.
  • A. 6 months
  • B. 8 months
  • C. 9 months
  • D. 10 months
Correct Answer: D
Explanation:
Use TD relation.
Related Question 1
The simple interest and true discount on a certain sum for a given time at a given rate are Rs. 85 and Rs. 80, respectively. Find the sum.
  • A. Rs. 1800
  • B. Rs. 1450
  • C. Rs. 1360
  • D. Rs. 6800
Correct Answer: C
Explanation:
Using the relation between SI and TD, the principal is Rs. 1360.
Related Question 2
True discount on Rs. 2562 due in 4 months is Rs. 122. Find rate.
  • A. 12%
  • B. 13%
  • C. 15%
  • D. 14%
Correct Answer: C
Explanation:
Solve using the TD formula.
Related Question 3
True discount on a bill due 9 months later at 16% is Rs. 189. Find the bill value.
  • A. Rs. 1386
  • B. Rs. 1764
  • C. Rs. 1575
  • D. Rs. 2268
Correct Answer: B
Explanation:
Apply the TD formula.
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 men walk around a circular track of 11 km. Find a time for them to meet again.
  • A. 11 hours
  • B. 12 hours
  • C. 220 hours
  • D. 22 hours
Correct Answer: A
Explanation:
LCM of time intervals.