A car covers 16 km per litre of petrol and another car covers 18 km per
liter of petrol. What is the smallest number of litres of petrol they should
have in their tanks to go exactly the same distance?
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It is clear that it is a situation of L. C. M.
So we will find The L. C. M. of 16 and 18 that is 144. so distance travelled is 144 km.
Petrol needed for first car=144/16 litres
=9 litres
Petrol needed for second car=144/18
=8 litres
I hope it may help you.
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