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Dorthy756
Dorthy756 Dorthy756
  • 10-06-2015
  • Mathematics
Answered



Jonathan drove to the airport to pick up his friend. A rainstorm

forced him to drive at an average speed of 45 mph, reaching the

airport in 3 hours. He drove back home at an average speed of

55 mph. How long, to the nearest tenth of an hour, did the trip home

take him?

(1) 2.0 hours (3) 2.8 hours

(2) 2.5 hours (4) 3.7 hours

Verified Answer :

mumsy
mumsy mumsy
  • 10-06-2015

on the way to the airport he drove with 45 mph in 3 h
the distance is 45mph*3h=135 miles
on the way back, he drove with 55 mph
55mph/?h=135 miles
h=135/55= 2.5
choice 1

Answer Link

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