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Re: Important GRE quant - Percentage increase/decrease [#permalink]
1
hudagretoefl wrote:

After a 15% discount, the price of a computer was $612. What was the price of the computer
before the discount?



Need an explanation. I am new here so don,t know how to post a question.


Hi,
Plz read the rules of posting, else the topic will get locked.

To answer your question .

Whenever there is percentage, I take the whole percentage to be 100, for easy calculation.

In this question,

Now let X = be the original price

there is a discount of 15% i.e we can re write it as (10015)X % = 612

or x = 61285100 = 720 = original price
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Re: Important GRE quant - Percentage increase/decrease [#permalink]
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