Petra jogs 5 miles in 40 minutes. At this rate, how long would it take her to jog 7 miles?

2 answers:

8 0

You could write and solve an equation of ratios:

5 mi 7 mi
------------ = ----------
40 min x

Then 5x = 280, and x = 56. Petra can jog 7 miles in 56 minutes.

Wittaler [7]3 years ago

6 0

(40 min)/(5 mi) = (time)/(7 mi) . . . . . the rates are the same
(7/5)*(40 min) = time = 56 min

At the same rate, it would take Petra 56 minutes to jog 7 miles.

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