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# A truck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of 550 km is

(a) 100 litres

(b) 50 litres

(c) 25.16 litres

(d) 25 litres

**Solution:**

Distance to be covered = 297 km

Diesel required by the truck to cover 297 km = 54 litres

Hence diesel required to cover one 1 km = 54/297 litres/km = 2/11litres/km

Therefore diesel required to cover 550 km is:

Diesel Required = 550 (2/11) litres = 50 2 = 100litres

Thus distance and diesel are directly proportional to each other.

**✦ Try This:** A truck needs 39 litres of diesel for covering a distance of 234 km. The diesel required by the truck to cover a distance of 540 km is (a) 100 litres, (b) 90 litres, (c) 78 litres, (d) 65 litres

Distance to be covered = 234 km

Diesel required by the truck to cover 234 km = 39 litres

Hence diesel required to cover one 1 km = 39/234 litres/km = 1/6 litres/km

Therefore diesel required to cover 540 km is:

Diesel Required = 540(1/6) litres = 90 litres

**☛ Also Check: **NCERT Solutions for Class 8 Maths Chapter 13

**NCERT Exemplar Class 8 Maths Chapter 10 Problem 5**

## A truck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of 550 km is (a) 100 litres, (b) 50 litres, (c) 25.16 litres, (d) 25 litres

**Summary:**

A truck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of 550 km is 100 litres

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