In the formula D=rt, find r in miles per hour if D is 390 miles and t is 13 hours.

In the formula D=rt, find r in miles per hour if D is 390 miles and t is 13 hours.
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1 Answer

d=rt...

t=13

d=30, so rt=30

so r=30/t...30/13

r=2.307692308

or bout 2.3
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