How would decreasing the time it takes you to run a certain distance affect your speed?

Speed is the distance you travel per period of time. (s = d/t). So since the time is in the denominator of the fraction, (lower denominator equals higher number), a lower time would mean a higher speed.

Think of it this way. The person who ran 1 mile in 5 minutes is faster than the person who ran 1 mile in 10 minutes, because they have a shorter time.

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