You are provided with 3 pipes of a square cross-section. The length of their sides are 2, 3 and 4 cms respectively. A tank is filled in 1 hour, if all 3 pipes run simultaneously. How much time will it take to fill the tank if only two pipes of side 2 cm and 3 cm are open?
a. 163.95 min b. 120 min c. 133.85 d. 50 min |
|||
|
|
 |
ans is c. 133.85
Post new comment