Algebra Word Problems : Relative Speed

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Kim starts to walk 3 mi to school at 7:30 a.m. with a temperature of 0 degrees F. Her brother Bryan starts at 7:45 a.m. on his bicycle, traveling 10 mph faster than Kim. They they get to school at the same time, then how fast is each one traveling?

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Solution Preview

Time needed for Kim's brother to arrive at school is 3 mi/10=0.3 (hour)=18 ...

Solution Summary

Relative speed is determined in the solution.

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