A student goes to his school by cycle. The distance from his house to school is 5 km and he covers this distance in 1 hour. While going he stops twice for 5 minutes each. Find his average speed (in km/h).
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 6.
The student spends 5 minutes each on two stops, which means he spends a total of 10 minutes or 1/6 of an hour stopped. This leaves him with 50 minutes or 5/6 of an hour of actual cycling time.
To find his speed, we use the formula:
Speed = Distance / Time
Speed = 5 km / (5/6) hour
Speed = 5 km × (6/5) hour
Speed = 6 km/hour
Therefore, the student's average speed is 6 km/hour.