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Best Answer

distance = rate x time

d=rt

40 miles = 45 mph x time (in hours)

40 = 45t

Solve for t.

45t = 40

t = 40/45

t = 8/9 hours

t = (8/9) x 60 minutes

t = 480 / 9 minutes

53.3333... minutes

or

0.8888... hours

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13y ago
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Q: How long does it takes to drive 40 miles if you were to drive at 45 miles per hour?
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