Question

Options are:-
A. 48 mins
B. 1hr 12 mins
C. 1hr 48 mins
D. 1hr 36 mins

Answer 1

Answer:

96

Step-by-step explanation:

Let the desired time to fill the tank be x minutes.  

In 80 mins a tank is filled by  6 pipes

Lesser the number of pipes more will be the time required by it to fill the tank.  

So, this is a case of inverse proportion.

Hence, 80×6=x×5  

⇒  

5

80×6

​

=x

⇒x=96

Answer 2

Step-by-step explanation:

Let the desired time to fill the tank be x minutes.

In 80 mins a tank is filled by 6 pipes

Lesser the number of pipes more will be the time required by it to fill the tank.

So, this is a case of inverse proportion.

Hence, 80×6=x×5

⇒ 5/80×6 =x

⇒x=96

Thus, the time is taken to fill the tank by 5 pipes is 96 minutes or 1 hour 36 minutes.