Flying into the wind, a helicopter takes 15 minutes to travel 15 kilometers. The return flight takes 12 minutes.The wind speed remains constant during the trip.
a.) Find the helicopter's average speed (in kilometers per hour) for each leg of the trip.
b.) Write a system of linear equations that represents the situation.
c.) What is the helicopter's average speed in still air? What is the speed of the wind?
I have done a and b, but I am confused on c. PLEASE HELP!!

Question

Flying into the wind, a helicopter takes 15 minutes  to travel 15 kilometers. The return flight takes 12 minutes.The wind speed remains constant during the trip.
a.) Find the helicopter's average speed (in kilometers per hour) for each leg of the trip.
b.) Write a system of linear equations that represents the situation.
c.) What is the helicopter's average speed in still air? What is the speed of the wind? 
I have done a and b, but I am confused on c. PLEASE HELP!!

anonymous · Answer

The average speed in still air should be 1/2 the difference between the two legs. What is that?

raffle_snaffle · Answer

average speed = total distance/ total time