1952 AHSME Problems/Problem 25
Problem
A powderman set a fuse for a blast to take place in seconds. He ran away at a rate of
yards per second. Sound travels at the rate of
feet per second. When the powderman heard the blast, he had run approximately:
Solution
Let be the number of feet the powderman is from the blast at
seconds after the fuse is lit, and let
be the number of feet the sound has traveled. We want to solve for
.
The number of yards the powderman is from the blast at time
is
, so the answer is
, which is about
yards.
See also
1952 AHSC (Problems • Answer Key • Resources) | ||
Preceded by Problem 24 |
Followed by Problem 26 | |
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