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# average speed

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Sonic and Flash each run at a constant rate of 7.5 miles per hour. Road Runner runs at a constant rate of 10 miles per hour. Speedy Gonzales runs at a constant rate of 12 miles per hour. In a relay chase with these four runners running one right after the other, Sonic runs 0.3 miles, then Flash runs 0.3 miles, then Road Runner runs 0.5 miles, then Speedy Gonzales runs 0.24 miles. What is their average speed in miles per hour?

Jan 30, 2021

### Best Answer

#1
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Average = total distance/total hours

total distance = .3 + .3 + .5 + .24 = 1.34 miles

total hours    .3m / 7.5 m/hr   + .3 / 7.5   +   .5/10  + .24/12  =..........   hrs

1.34 miles/ total hours =   .......... m/hr average

Jan 30, 2021

### 1+0 Answers

#1
+1
Best Answer

Average = total distance/total hours

total distance = .3 + .3 + .5 + .24 = 1.34 miles

total hours    .3m / 7.5 m/hr   + .3 / 7.5   +   .5/10  + .24/12  =..........   hrs

1.34 miles/ total hours =   .......... m/hr average

Guest Jan 30, 2021