Question

a tank 4/5 full needs 75 liters to fill it up. how many liters does it hold when full? - help please :3 xx

Answer 1

full tank = 1 = 5/5
5/5 - 4/5 = 1/5
1/5 = 75
5/5 = 75 x 5 = 375
hope this helps(:

Answer 2

`x- \cantity \ of \ substance \ contained \ by \ the \ tank \\ \\ (4x)/(5)+75= (5x)/(5) => (x)/(5)=75 \\ \\ \boxed{x=5*75=375 \ litres}`