Old runner can complete course with an average speed

Reference no: EM13557494

An 18-year-old runner can complete a 10.0-km course with an average speed of 4.49 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.27 m/s. How much later should the younger runner start in order to finish the course at the same time as the older runner.

Reference no: EM13557494

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