1. ## percentageA

A water pipe can fill a 250 litre tank in 2 hours 30 minutes.In how much time will it fill 9/ 10 of the tank ?

2. $250$......................... $150$ minutes

$\frac{9}{10}\cdot 250$......................... $x$

Can you find x?

3. If a = x, then y = x/a * b

2.5/250 * 250(9/10) = ? ; 2.5 is 2 hours 30 minutes