Question

Pipe A and Pipe B can fill the tank in 3 hours and 6 hours , respectively. How many hours will it take to fill the tank completely, if

both the pipes are opened together?​

Answer 1

Answer:

2 Hours

Step-by-step explanation:

Time taken by Pipe A = $\frac{3}{1}$ hrs

So, Tank filled in Pipe A in 1 hr = $\frac{1}{3}$

Time taken by Pipe B = $\frac{6}{1}$ hrs

So, Tank filled in Pipe B in 1 hr = $\frac{1}{6}$

Time taken by both pipes together in 1 hr = $\frac{1}{3}$ + $\frac{1}{6}$

LCM of 3 and 6 = 6, = 2/6 + 1/6 = 3/6 = 1/2 = Half Tank filled

So, Time taken to fill full tank = 2 hrs