SOLUTION: The price of a refrigerator decrease by 20%and then by 25%. By what percent must the price increase to reach the original price

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Question 844163: The price of a refrigerator decrease by 20%and then by 25%. By what percent must the price increase to reach the original price
Answer by josgarithmetic(39630)   (Show Source): You can put this solution on YOUR website!
p = original price.

Decrease 20%.



Decrease 25% from (8/10)p.







The 20% and then the 25% decreases were effectively a decrease of of the original price, which is a 40% decrease from the original price p.

The question is, starting from , what is the percent increase to reach ?

Let m be a factor so that . What is the value of this factor, m? No steps needed hopefully, for seeing that . As the percent increase, this is ; the two-thirds part being the fraction of the increase needed. As a percentage, this is percent increase.

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