# Vehicle tank

A vehicle tank was 3/5 full of petrol. When 21 liters of fuel was added it was 5/6 full. How many liters of petrol can the tank hold?

Result

V =  90 l

#### Solution:

3/5V + 21 = 5/6 V

7V = 630

V = 90

Calculated by our simple equation calculator.

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