Mr. Smith left his house at 7:30 a.m and drove at a rate of 50 mph until 10:00a.m He than stopped for half an hour . At what rate must he travel in order to get to work by noon if he still has 105 miles to go
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Solution
Time left = 1.5 hrs distance that to be covered= 105 miles =105× 1609.344 m =168981.12 m Therefore the rate he must follow = 168981.12 /1.5 =112654.08 mph