Question

A truck covers a distance of 510 km in 34 litres of diesel. How much distance would it cover in 20 litres of diesel ?

Answer 1

$\begin{array}{cc}Dieselin& Dieselin\\ Adistance:litres::& Distance:litres\\ \left(km\right)& \\ 510:34::& x:20\end{array}$

(Less petrol less distance)

By direct proportional

$x=\frac{510\times 20}{34}=300$

$\therefore$ Distance covered = 300 km