SOLUTION: Tim can run three miles in 20 minutes. If he maintains his speed, how long will it take him to run nine miles?

Question 1050863: Tim can run three miles in 20 minutes. If he maintains his speed, how long will it take him to run nine miles?
Answer by Zucchini(70) (Show Source): You can put this solution on YOUR website!
In order to solve this problem, the following formula is needed:
Speed =
Tim can run three miles in 20 minutes. Plug in what you know:
Speed =
Speed= 0.15 mi/ minutes
If he maintains his speed, how long will it take him to run nine miles?
Again, plug in what you know:
Speed=
0.15 mi/ minutes =
multiply each side by time:
(0.15 mi/ minutes)(time) = 9 miles
divide each side by 0.15 mi/ minutes:
time=
time= 60 minutes
It will take Tim one hour, or 60 minutes, to run nine miles.
Another way to solve this problem is by realizing that if Tim can run 3 miles in twenty minutes and by multiplying 3 by 3, you get 9. When you multiply 3 by 20 minutes, you also get 60 minutes.
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