a vehicle uses 2 two by 5 litres of petrol in 1hr.how many litres of petrol will be required to run vehicle for 3.5hrs?
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-2/5 L (0.4 L) petrol was used in 1hr. So amount of petrol required to run the vehicle for 3.5 hr
= 3.5 x 0.4
= 1.4 L = 14/10 L = 7/5 L
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