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24 September, 14:25

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

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Answers (1)
  1. 24 September, 14:48
    0
    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
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