Question

if 1 pipe can fill the tank in 5 hours in how many hours can 2 pipe fill the same tank​

Answer 1

Answer:

Step-by-step explanation:

Both pipes together can fill the tank full in (5*3)/5+3 hours. That is, in 15/8 hours. To fill 2/3rd tank, they will take 2/3 * 15/8 hours = 5/4 hours

Answer 2

Answer:

30hrs

Step-by-step explanation:

Pipe A can billion empty tanks in 5hrs

⇒ billed by pipe A in hr =  

5

1

Pipe B can fill an empty tank in 6hrs.

⇒ Part filled by pipe B in 1hr=  

6

1

∴ tank filled by pipe A and B together in 1 hr =  

5

1

​  

−  

6

1

​  

=  

30

1

​  

∴ the tank can be filled in 30hrs.