SOLUTION: the fuel tank in my new car was 40% full. i added 28 litres and then found that it was 75% full. how much fuel does the tank hold?

Question 947863: the fuel tank in my new car was 40% full. i added 28 litres and then found that it was 75% full. how much fuel does the tank hold?
Found 2 solutions by josgarithmetic, lwsshak3:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The 28 gallons made a difference of (75-40)% of the tank capacity.

28 gallons is 35% of the tank capacity.

, using c for the tank capacity.

Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
the fuel tank in my new car was 40% full. i added 28 litres and then found that it was 75% full. how much fuel does the tank hold?
***
let x=amt of fuel tank holds
(40%x+28)/x=75%
.40x+28=.75x
.35x=28
x=80
amt of fuel tank holds=80 litres
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