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SIZIF [17.4K]
4 years ago
15

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

Mathematics
2 answers:
enyata [817]4 years ago
6 0
x- \cantity \ of \ substance \ contained \ by \ the \ tank \\ \\ \frac{4x}{5}+75= \frac{5x}{5}  => \frac{x}{5}=75 \\ \\ \boxed{x=5*75=375 \ litres}
spayn [35]4 years ago
3 0
Full tank = 1 = 5/5
5/5 - 4/5 = 1/5
1/5 = 75
5/5 = 75 x 5 = 375
hope this helps(:
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