How to find an original price from a reduced percentage.

Take the example: 'The price of a TV is reduced to 69% and is now £379.50. Find the original price. (This means find the price when it was at 100%.) Let's start by calling each percentage a 'part'. The new price is 69 out of 100 parts, but we want to find the value of the full 100. You could find the value of one part, by dividing 69% by 69, hence diving £379.50 by 69. This gives £5.50. Now find the value of 100 parts by multiplying the value by 100. This gives £550. Putting this into a formula, you could say: Original price= 100/New percentage

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Answered by Phoebe E. Maths tutor

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