If you fail, never give up because FAIL means 'First Attempt In Learning'.— A. P. J. Abdul Kalam

Problem Solving — quick quiz

5 real AP ICET questions on Problem Solving. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 4

HARD

A cistern has two taps which can fill it in 12 minutes and 15 minutes respectively. There is also a waste pipe at the bottom. When all three are opened, the cistern fills in 20 minutes. In how much time can the waste pipe empty the full cistern?