Question

What is the average speed of a helicopter that flies 50 km in 20 minutes and then 30 km in 10 minutes?

Answer 1

160 km/hour

Step-by-step explanation:

Average speed = Total distance traveled/Total time taken

Total distance traveled = 50 + 30 = 80 km

Total time taken = 20 + 10 = 30 min

Average speed = 80/30 = 8/3 km/min = 8/3 x 60 km per hour

= 160 km/hour