Question

6 pipes fill a tank in 1hour 24 minutes,7 pipes can fill the same tank

Answer 1

6pipes=1hr 24min(as 1hr=60min)

6pipes=84 minutes
7pipes=?
84*7/6=14*7
=98minutes.
Or 1hr 38minutes

Answer 2

6 pipes => 1 hr 24 mins

6pipes=>84mins

7pipes=?

$6 \times 84 \div 7 = 72$


6×8056×805=x=x

x=72min

Answer : 72min