Question

Pipes A and B can fill a tank in 40 hours and 50 hours respectively and pipe C can empty the full tank in 60 hours. If all the pipes are opened together, how much time (in hours) will be needed to fill the tank?

• A. $33\frac{5}{17}$
• B. $35\frac{5}{17}$
• C. $31\frac{5}{17}$
• D. $30\frac{5}{17}$

Answer 1

Answer: (B)

$35\frac{5}{17}$

Answer 2

The correct option is(B):$35\frac{5}{17}$