Question

At a steady speed, a train uses 15 litres of petrol to travel 50 km.

At the same speed, what distance could be travelled using 18 litres of petrol?​

Answer 1

If a train uses 15 litres of petrol to travel 50 km, at the same speed, it could travel 60 km using 18 litres of petrol by setting up a proportion and solving for the unknown distance.

Step-by-step explanation:

The question asks us to calculate the distance a train can travel using a different amount of petrol based on a given ratio. If a train uses 15 litres of petrol to travel 50 km, we can find out how much distance it could travel using 18 litres of petrol by setting up a proportion, since the speed of the train is steady and thus the fuel consumption rate is constant.

Step 1:

Set up the proportion: (15 litres / 50 km) = (18 litres / unknown distance).

Step 2:

Cross-multiply to find the unknown distance: 15 litres × unknown distance = 50 km × 18 litres.

Step 3:

Divide both sides by 15 litres to solve for the unknown distance.

Step 4:

Calculate the result: unknown distance = (50 km × 18 litres) / 15 litres = 60 km.

Therefore, at the same steady speed, the train could travel 60 km using 18 litres of petrol.

Answer 2

Since the train uses 15 litres to travel 50,

18 litres would be 50÷15 the answer multiplied by 18.

Solution

50÷15= 3.333

3.333×18= 60