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Mathematics
Equations and Formulas
Rate of Speed
In the formula rt = d, r is rate, t is time, and d is distance. What is the rate for a runner who completes 7.5 miles in 1.5 hours?
A. 11.25 mph
B. 9.0 mph
C. 6.0 mph
D. 5.0 mph
1 answer
The formula is rt=d, so we can rearrange it to solve for r, the rate: r=d/t. We plug in the values given: r=7.5 miles / 1.5 hours = 5 mph. Therefore, the answer is D.
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