Two pipes A and B can fill a tank in 15 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank ?
A10 min
B15 min
C25 min
D50 min
Answer:
A. 10 min
Read Explanation:
If total work is 30 The efficiency of pipe A = 2 The efficiency of pipe B = 1 Total efficiency = 2 + 1 = 3 Time taken by both pipes = 330 = 10 min