Question

If car covers 16 km in x litres of petrol, and in 1 litre of petrol, it can cover x km. How much distance will it cover in 5 litres of petrol?

• A. 20 km
• B. 22 km
• C. 25 km
• D. 21 km

Answer 1

The correct option is A

20 km

Distance covered in 1 litre=$x$ km

$\therefore$ distance covered in $x$ litres of petrol = $x$ $\times$ Distance covered in 1 litre

= $x$ $\times$$x$

= $x^2$

Given, car travels 16 km in $x$ litres of petrol

$\Rightarrow$ $x^2$=16
$\Rightarrow$ $x$=4

So, distance covered by car in 1 litre = 4 km
So, in 5 litres it will cover 5 x 4 = 20 km.