Question

A pipe can fill a tank in 6 hours and another pipe can empty the tank in 12 hours. If both the pipes are opened at the same time ,the tank can be filled in
A)10 hours
B)12 hours
C)14 hours
D)16 hours
Explain also plss

Answer 1

Answer:

Pipe A and B can fill tank in 2 and 3 hours respectively and C can empty in 6 hours.

2

1

+

3

1

−

6

1

=

6

3+2−1

=

6

4

=

3

2

i.e. the tank can be filled in

2

3

=1.5 hours

Answer 2

Answer:

Correct answer;

option (B)

Step-by-step explanation:

Apply formula =

XY

Y—X

X = 6 hours and Y = 12 hours

Then for

6*12

12—6

=12 hours