Question

6 pipes are required to fill a tank in 1 hour. How long will it take if only 5 pipes of the same type are used?

 75 minutes

 72 minutes

 80 minutes

 90 minutes

​

Answer 1

Answer:

answer is 72 minutes

Step-by-step explanation:

it is indirect proportion so,

x×y=K

6×1=6

5×X=6

X=6/5 hours(According to question)

6/5×60= (Converting of hours to minutes)

=72 minutes