Question

Billy needs 4000 points to become level 7 on battle field 3 . If he has completed 3/5 of what he needs so far how many points does he still need ?

Answer 1

If he has completed 3/5  he needs to go (1-3/5 ) 2/5 yet

4000* 2/5 =1600

He needs 1600 points

Answer 2

If Billy needs 4000 points then it tells us how much is needed. Then it tells us he has compleated 3/5 of it. In order to get how much he still has left, you just multiply the two numbers together and then subsract that number from 4000.

4000 * 3/5 = 2400 (That is how much he has completed)

4000 - 2400 = 1600

Billy still needs 1600 points.