1974 AHSME Problems/Problem 7
Problem
A town's population increased by people, and then this new population decreased by . The town now had less people than it did before the increase. What is the original population?
Solution
Let be the original population. When people came, the new population was . Then, since the new population decreased by , we must multiply this new population by to get the final population. This is equal to . We're given that this is less than the original popluation, . Therefore, .
See Also
1974 AHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 6 |
Followed by Problem 8 | |
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