A tank 4/5 full needs 75 litres to fill it up.how many litres does it hold when full

asked Nov 13, 2016 211k views

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by Jesup

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x - the volume of the tank

$(4)/(5)x+75=x \\ 75=x-(4)/(5)x \\ 75=(1)/(5)x \ \ \ |* 5 \\ x=375$

The tank holds 375 liters when full.

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