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A car traveled a distance of 100 km. It covered 60 km in the first three hours and the remaining 40 km in the next hour. We need to find the average speed of the car.

ArithmeticAverage SpeedDistanceTimeRate
2025/5/23

1. Problem Description

A car traveled a distance of 100 km. It covered 60 km in the first three hours and the remaining 40 km in the next hour. We need to find the average speed of the car.

2. Solution Steps

The average speed is defined as the total distance traveled divided by the total time taken.
Average speed=Total distanceTotal timeAverage\ speed = \frac{Total\ distance}{Total\ time}
The total distance traveled is 100 km.
The time taken for the first 60 km is 3 hours.
The time taken for the next 40 km is 1 hour.
The total time taken is 3+1=43 + 1 = 4 hours.
Average speed=100 km4 hours=25 km/hAverage\ speed = \frac{100\ km}{4\ hours} = 25\ km/h

3. Final Answer

The average speed of the car is 25 km/h.
The answer is (b) 25 km/h.

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