The distance between two cities is 30 km. A car travelled the distance in 50 minutes. Find the speed of the car in km/h.

Correct answer: 36 km/h. 50 minutes = 5/6 hour, so speed = 30 ÷ (5/6) = 36 km/h.

Background: Convert the time to hours before using speed = distance ÷ time.

• 30 km/h: 30 km/h would take a full hour.
• 40 km/h: 40 km/h would take 45 minutes.
• 45 km/h: 45 km/h would take 40 minutes.

Did you know? Divide minutes by 60 to get hours.

Memory trick: Minutes ÷ 60 → hours.