A scooter consumes 2.5 litres of petrol in covering a distance of 85 km. What distance will it cover in 8 litres of petrol?

In 2.5 litres, distance covered = 85 km.

In 1 litre, distance covered = $\Big( \dfrac{85}{2.5}\Big)$ km. $\quad$[Less petrol, Less distance]

Multiply by 10 to remove decimals.

In 1 litre, distance covered = $\Big( \dfrac{85 \times 10}{2.5 \times 10}\Big) = \Big( \dfrac{850}{25}\Big)$ km

In 8 litres, distance covered = $\Big( \dfrac{850}{25} \times 8\Big) \text{ km} \quad \text{[More petrol, More distance]}$

= 34 x 8 km $\quad$ (Dividing 850 and 25 by 25)

= 272 km.

Hence, the scooter will cover 272 km in 8 litres of petrol.