Question

A tap can fill a tank in 10 hours and another
tap can do so in 5 hours. The first tap is
opened and allowed to run for 2 hours. Then
the second tap is also opened. How long will
it take (total time) for the tank to be filled?

Answer 1

read the question carefully it is a start a tap can fill a tank in 10 hours and tab is open and allowed to run for 2 hours it will divide 2 from 10 and its 5 now come towards next term that as it is a start another tab can do so in 5 hours and how how long it take so if we divide 5 by
X and answer is one because It do not have a value in this time .
now see that is a tank in 10 hours and it continuously Run for 2 hours then the second time​ shows that if the tank complete water and at a store in it completely in 5 hours than the time taken by tank: divide 5 by X it gives 1 answer is 1 hour hope it helps you and thank you for asking questions