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posted by Anonymous Friday, March 29, 2013 at 5:52pm.
what is the speed in miles per hour of toy car that runs 40 ft in 8 seconds. 1 hour=3600. 1 mile=5280 ft
Cross multiply and solve for x. 40/8 = x/3600 8x = 144,000 x = 18,000 ft 18,000 / 5,280 = 3.4 mph
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