1.	Add 2 hours 17 minutes to 3 hours 53 minutes. Rename if necessary.
		A.	5 h 60 min	B.	5 h 70 min
		C.	6 h 70 min	D.	6 h 10 min
		Hint
	2.	Subtract 1 hour 54 minutes from 3 hours 13 minutes.
		A.	1 h 29 min	B.	2 h 41 min
		C.	2 h 51 min	D.	1 h 19 min
		Hint
	3.	Add 1 hour 49 minutes to 9 hours 25 minutes. Rename if necessary.
		A.	11 hours 74 minutes	B.	10 hours 74 minutes
		C.	10 hours 14 minutes	D.	11 hours 14 minutes
		Hint
	4.	Add 2 hours 3 minutes 5 seconds to 57 minutes 49 seconds.
		A.	2 hours 60 minutes 54 seconds	B.	2 hours 63 seconds
		C.	3 hours 50 minutes 63 seconds	D.	3 hours 54 seconds
		Hint
	5.	A concert begins at 7:45 P.M. and ends at 10:10 P.M. How long was the concert?
		A.	3 hours 35 minutes	B.	2 hours 25 minutes
		C.	2 hours 15 minutes	D.	3 hours 25 minutes
		Hint