Answer to January 2010 Problem
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Last summer, I saw this confusing Sales sign in Macy's:
What was the percent of the first reduction? |
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| Solution to the Problem: The item was already reduced by 50%.If you took 50% off the original price, and then you took 50% of what was left (50%), you would have reductions of 50% and 25% off the original for 75%. Using algebra, let x = original price let R * x = reduced price The final price is .25 x Hence, .5 R x = .25 x so, R = .5 or 50%, and the amount of discount is 100 - 50 = 50%. |
| 1. Jason LaRusso | Winchester, Virginia |