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If Mark drives for 4 hours at 60 miles per hour and then drives another 5 hours at 80 miles per hour, what is his average speed, in miles per hour, for the trip?

 Jun 4, 2024

Best Answer 

 #1
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ez

 

4 hrs at 60 mph = 240 miles

 

5 hrs at 80 mph = 400 miles

 

240 + 400 = 640

4 + 5 = 9

 

his average speed is 640/9 mph(approx. 71.1 mph)

 Jun 4, 2024
 #1
avatar+29 
+1
Best Answer

ez

 

4 hrs at 60 mph = 240 miles

 

5 hrs at 80 mph = 400 miles

 

240 + 400 = 640

4 + 5 = 9

 

his average speed is 640/9 mph(approx. 71.1 mph)

dplostthegame Jun 4, 2024

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