Question

Use the midpoint formula

In a running​ race, the 200​-meter dash is run in approximately 21 seconds. Estimate the time to run the 100​-meter dash.


Answer fast!!!

Answer 1

10.5 seconds.

Explanation:

Remember that this is an estimate. It is meant for you to do in your head. It is not meant for Google or a calculator.

100 meters is 1/2 of 200 meters.

100 meters time is roughly 1/2 that for 200 meters.

21 seconds * 1/2 = 10.5 seconds.