Question

If a car covers 100 km with 5 litres of petrol, how much petrol would it need for 200 km?

• A. 15 L
• B. 10 L
• C. 20 L
• D. 5 L

Answer 1

The correct option is B 10 L

100 km are covered in 5 litres of petrol,

Hence,1 km would be covered in
$\frac{5}{100}=\frac{1}{20}\text{litres of petrol.}$

$\therefore$ 200 km would be covered in
$200\times \frac{1}{20}=10l$