Question

if x is half of y,78 on the middle between 10 or 16 then y/x?​

Answer 1

Answer:

Three pipes A,B and C, fills a drum in 5 hours, 15 hours and 20 hours respectively. (A)If all the taps are open, in how many hours will the drum be filled? (B) If tap A and tap B are closed after 7/2 hours, how much time will tap C take to fill the remaining work?