Reid took 1 hour to cycle from his home to his college. The graph shows Reed's distance from his college during That hour. Reid's average speed for the last 15 minutes Of the hour was how many kifometers per hour greater Than his average speed for the first 45 minutes?

Reid took 1 hour to cycle from his home to his college.

The graph shows Reed's distance from his college during

That hour. Reid's average speed for the last 15 minutes

Of the hour was how many kifometers per hour greater

Than his average speed for the first 45 minutes?

答案：

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