Reverse Percent: The Price Before the Discount, the Whole From a Part, and What Percent

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Opens on Chapter 12’s example: Nora’s $36 sweater, 25% off.

The price before a discount or tax

Price you paid $

Percentage %

It was

The whole from a part

The part $

is this percentage of the whole %

What percent is it?

The part

of the whole

A price that keeps a set amount after a cut

You want to keep $

The cut %

Load another example from the book

Enter your numbers, then press Calculate.

From the book, Chapter 12. $36 after 25% off was $48, not $45. A $53.63 total with 7.25% tax was $50.00 before tax (taking 7.25% off gives $49.74). $585 that is 15% of take-home means take-home of $3,900, and 1% is $39. $540 of $2,400 is 22.5%. A $9 tip at 15% means a $60 bill. $79.99 down to $59.99 is 25% off. To keep $300 after a 40% cut, price it at $500.

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