Sidney flew in an airplane five times during her vacation.The flights averaged 2 hours 8 minutes long.The lengths of her first four flights were 2 hours 10 minutes,3 hours 20 mins,1 hours 15 minutesand 2hours 40 minutes.What was the length of her last flight?

Answer 1

change all times to minute
(130 +200 +75 + 160 + x)/5 = 128

Simplify by summing all of the times.
Multiply both sides by 5

subtract your sum from that number to find x.

Rewrite minutes int hours and minutes.