if a car uses 1/3 of a tank of petrol on the first part of the journey then 2/5 of a tank of petrol on the second part on the jo urney and has 8 litres how many litres of petrol did it have before the journey
1 answer:
We assume the petrol tank was full at the beginning of the journey. The petrol tank holds x litres. x - 1/3 x - 2/5 x = 8 15x/15 - 5x/15 - 6x/15 = 8 4x/15 = 8 4x = 120 x = 30 The petrol tank holds 30 litres.
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