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If you travel one and a half miles in 49 seconds with an average speed of 110 MPH and for one third of that distance you were going 90 MPH how fast were you traveling for the other mile?
Johnrmclaren
One way to solve: 90 MPH = 0.025 miles/second [there are 3600 seconds in an hour, so 90/3600 = 0.025].
You traveled 0.5 miles at 0.025 miles per second: (0.5 miles)/(0.025 miles/sec) = 20 sec.
So it took 20 seconds to travel 0.5 miles. The remainder of the distance (1 mile) took 29 seconds [49 - 20 = 29].
(1 mile)/(29 sec) = 0.034483 miles per second. Multiply by 3600 to get 124.14 MPH
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∙ 12y ago
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