Question

A tap can fill a tank in 4 hours how much of it can the tap fail in 2 and half hours

Answer 1

Umm westernal point T .prove to water tank can together fill hours less than the smaller a tank in 9 hours .

93 hour the tap of large diameter takes 10.

let diameter to fill the tank sepretele .

find the time in which each tap can fill sepretely the tank.