A helicopter leaves an airport and flies south at 180 mi/h. Thirty minutes later, an airplane leaves the airport and follows the same route as the helicopter, only at a higher elevation. The airplane is flying 330 mi/h. How many minutes will it take for the airplane to catch up with the helicopter? (Hint: 30 minutes is 12 hour.)

A. 12 minutes
B. 24 minutes
C. 36 minutes
D. 66 minutes

Question

A helicopter leaves an airport and flies south at 180 mi/h. Thirty minutes later, an airplane leaves the airport and follows the same route as the helicopter, only at a higher elevation. The airplane is flying 330 mi/h. How many minutes will it take for the airplane to catch up with the helicopter? (Hint: 30 minutes is 12 hour.)

	A.	12 minutes
	B.	24 minutes
	C.	36 minutes
	D.	66 minutes

anonymous · Answer

I have totally forgot how to do this. Can some one show me how?

rishavraj · Answer

assume tht the airplane is able to catch up after  x  mins
so the distance covered by the first plane in (30 + x)mins should be equal to distance covered by the second plane in  x mins