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8. Ming left home and drove toward the ocean. Norachai left one hour later driving at 45
mph in an effort to catch up to Ming. After driving for four hours Norachai finally
caught up. What was Ming's average speed?
1
2
Rate Time Distance
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DELL

Respuesta :

Ming’s average speed is 36mph

Let the average speed of Ming’s be x mph.

Given that, Norachai average speed = 45 mph

                     Time taken by Norachai to catch up to Ming =  4 hrs  

As Norachai left after 1 hour and reached after 4 hour to reach Ming

Therefore, Ming took 5hrs. (1 + 4 hrs.) to reach the ocean.

As both were going to the same destination they would be covering same distance.

Therefore,

             Distance covered by Ming = Distance covered by Norachai

                      x * 5 = 45 * 4

As,    distance = speed * time

Then from equation (1) we get,

                        x = 180/5

                        x = 36

Hence, average speed of Ming’s is 36mph                  

Learn more about average speed here : https://brainly.com/question/24739297

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