Asked by Anonymous

1.It took Jack 4 hours to drive from his house to the beach at a speed of 45km/h. If he takes 5 hours to make the return trip home,what will his speed be?
Answered by Ms. Sue
4 * 45 = 180 km

180 / 5 = _____km/h
Answered by Damon
d = rate * time

45 * 4 = rate * 5

rate = 45 * 4 / 5 = 36 km/h
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