The speed of a car is 180 km in the first hour and 120 km in the second hour. What is the average speed of the car?200 km/hr150 km/hr180 km/hr140 km/hrNone
Question
The speed of a car is 180 km in the first hour and 120 km in the second hour. What is the average speed of the car?
- 200 km/hr
- 150 km/hr
- 180 km/hr
- 140 km/hr
- None
Solution
To calculate the average speed of the car, you need to divide the total distance travelled by the total time taken.
Step 1: Calculate the total distance travelled. The car travelled 180 km in the first hour and 120 km in the second hour. So, the total distance travelled is 180 km + 120 km = 300 km.
Step 2: Calculate the total time taken. The car travelled for 2 hours (1 hour + 1 hour).
Step 3: Calculate the average speed. The average speed is the total distance divided by the total time. So, the average speed is 300 km / 2 hours = 150 km/hr.
So, the average speed of the car is 150 km/hr.
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