A car is travelling at 40 km per hour. We need to find the distance the car travels in 1/2 hours.

1. Problem Description

A car is travelling at 40 km per hour. We need to find the distance the car travels in 1/2 hours.

2. Solution Steps

The formula relating distance, speed, and time is:

$Distance = Speed \times Time$

Given:

Speed = 40 km/hour

Time = 1/2 hour = 0.5 hour

We plug in the values into the formula:

$Distance = 40 \times 0.5$

$Distance = 20$

3. Final Answer

The car travels 20 km in 1/2 hours.