Question

7 taps of the same size fill tank in 1 hour 36 minute. How long will 8 taps of the same size take to fill the tank

Answer 1

taps. time
7. 1hr36min
8. x
inverse variations
so
7multiply by 1hr =60min+36min=96min
8multiply by. x
ans is 84min=1hr24min

Answer 2

let the amount of tank filled by one pipe be x
$7x = \frac{1}{96} \\ x = \frac{1}{96} \times \frac{1}{7} \\ 8x = \frac{1}{96} \times \frac{1}{7} \times 8$


answer is equal to 1 hour and 24 mins