Question

A journey of $500km$ is covered by car using $20liters$ of petrol. How much petrol will be used for journey of $750km?$ What will be the distance that the car can travel with $27liters$ of petrol?

Answer 1

Petrol consumed in 500 km journey = 20 lit

Petrol consumed in 1 km journey = $\frac{20}{500}=\frac{1}{25}lit$

Petrol consumed in 750 km journey = $\frac{1}{25}\times 750=30lit$

Distance travelled by 20 lit petrol = 500 km

Distance travelled by 1 lit petrol = $\frac{500}{20}=25km$

Distance travelled by 27 lit petrol = $25\times 27=675km$