Question 960714
Let x be the price of an mp3 player last year, then
x - .2x = 120
.8x = 120
x = 120 / .8
x = 150
The price of the mp3 player LAST YEAR is $150
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If we assume the same .20 decrease for NEXT YEAR, the cost of the mp3 player will be 120 - 24 = $96
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not sure if you want price of mp3 player LAST YEAR or NEXT YEAR?