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### Primary 6 Problem Sums/Word Problems - Try FREE

- Speed: Getting there! > Speed Exercise 25 > 2
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- Attempt Mode: Attempt Single Question

**Score :**

(Single Attempt)

**Question
**

When a plane flies at an average speed of 300 km/h , it will use 1200 litres of fuel for every 100 km it travels.

When the same plane flies at an average speed of 200 km/h, it will use 800 litres of fuel for every 80 km it travels.

How much fuel will a plane have to use if it travels a journey of 20 hours at an average speed of 300 km/h for 8 hours and the rest of the journey at an average speed of 200 km/h ?

The correct answer is :

**52800**