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A car runs 9 kilometres using 1-litre petrol? How much distance will it cover in 3 whole $\frac{2}{3}$ litres of petrol?
Given:
A car runs 9 kilometres using 1-litre petrol.
To do:
We have to find the distance it will cover in 3 whole $\frac{2}{ 3}$ litre of petrol.
Solution:
The number of kilometres run by car using 1 litre of petrol $=9$ km.
The number of kilometres run by car using $3\frac{2}{3}$ litres of petrol.
$=9\times3\frac{2}{3}$ km
$=9\times(\frac{3\times3+2}{3})$ km
$=9\times\frac{11}{3}$ km
$=3\times11$ km
$=33$ km.
The distance travelled by the car using $3\frac{2}{3}$ L of petrol is 33 km.
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