SOLUTION: Superman can fly 12 miles in the same amount of time it takes him to run 8 miles. He flies 15 mph faster than he runs. Find both supermans flying speed and running speed

Question 1013230: Superman can fly 12 miles in the same amount of time it takes him to run 8 miles. He flies 15 mph faster than he runs. Find both supermans flying speed and running speed
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
Distance=(rate)*(time)
time=distance/rate
.
Let R=rate he runs
Using time running=time flying:
.

ANSWER 1: He runs at 30 mph.
.
Rate flying=R+15mph=30mph+15mph=45mph
ANSWER 2: He flies at 45 mph.
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