2001 AMC 8 Problems/Problem 5
Contents
Problem
On a dark and stormy night Snoopy suddenly saw a flash of lightning. Ten seconds later he heard the sound of thunder. The speed of sound is 1088 feet per second and one mile is 5280 feet. Estimate, to the nearest half-mile, how far Snoopy was from the flash of lightning.
Solution
During the seconds, the sound traveled
feet from the lightning to Snoopy. This is equivalent to
miles,
.
Solution 2
Since we are estimating, we can make become
, and
will become
. Then do
and we get 5, or
See Also
2001 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 4 |
Followed by Problem 6 | |
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