tank A when full holds 555 gallons of water Tank B when full

tank A, when full, holds 555 gallons of water. Tank B when full holds 680 0f water.if tank A is 2/3 full and tank B is 2/5 full how many gallons of water must you pump to fill both tanks

Solution

tank A is 2/3 full means amount of water to fill tank A is:555/3 gallons

tank B is 2/5 full means amount of water to fill tank B is: 680*3/5 galons

So total water required is

555/3+680*3/5=593 gallons