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how to reverse percentage discounts. To calculate the original price from the discounted price work backwards from the equation above. 10 of 45 010 45 450.
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AQA GCSE maths revision practice paper 4. Reverse Percentage Problems Material Master 8-32 Activity. In this example we are going to use a more abstract number and percent.
So 25 14 and the inverse of 14 4.
Opposite of the discount percent. If you discount by a certain percentage like 30 percent the discounted price is 70100 or 70 percent of the original. Add 1 to the percentage expressed as a decimal. The opposite of a percent is 100 minus the percent you are working with.
