Question

A tank has four taps. Tap A, tap B and tap C can fill the tank in 15 hours. Tap B, tap C and

tap D can fill it in 20 hours. Tap A and tap C can fill it in 12 hours. In how much time can all

the taps fill the tank?

A. 5 hours

B. 10 hours

C. 2 hours

D. 12 hours​

Answer 1

according to me the answer should be option number B I.e 10 hours