Question

An auto covers 40 km in one hour in normal traffic. Due to heavy traffic, its speed reduces by 10 km per hour. So, with this speed, how much distance will it cover in 5 hours?

• A. 100 km
• B. 120 km
• C. 140 km
• D. 150 km

Answer 1

The correct option is D 150 km

Distance covered in 1 hr in normal traffic = 40 km

So, the speed of the auto in normal traffic = 40 km per hour

Given that its speed reduces by 10 km per hour in heavy traffic.

So, speed of the auto in heavy traffic = 40 - 10 = 30 km per hour

It means, the auto will cover 30 km in one hour in the situation of a heavy traffic.

So, the distance covered by auto in 5 hours = 30 $\times$ 5
= 150 km