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Stan drove 300 miles in 5 hours, 20 minutes. Next, he drove 360 miles in 6 hours, 40 minutes. What was Stan's average speed in miles per hour for the total trip?

 Feb 17, 2022
 #1
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5 hr 20 min  = 5 + 1/3 hr  = 16/3  hr

6 hr  40  min =   6 + 2/3 hr  =  20/3 hr

 

Avg rate =   

 

Total distance /  Total Time  =

 

[ 300 + 360 ]   /   [ 16/3 + 20/3 ]  =

 

660   / [ 36/3 ]  =

 

660  / 12  =

 

55  mph

 

cool cool cool

 Feb 17, 2022
 #2
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Oh thank you so much CPhill!!! smiley

Guest Feb 17, 2022

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