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Reverse Percentage or Finding the original quantity

Reverse Percentage or Finding the original quantity. 54. 162.  54.  54. 1. 3. x 100. x 100. 100. 300. Reverse Percentage. Example: 54% of the adults living on a street own a car. If 162 adults own a car, how many adults live in this street?. 65. 52.  65.  65. 1. 0.8.

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Reverse Percentage or Finding the original quantity

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  1. Reverse Percentage or Finding the original quantity

  2. 54 162  54  54 1 3 x 100 x 100 100 300 Reverse Percentage Example: 54% of the adults living on a street own a car. If 162 adults own a car, how many adults live in this street?

  3. 65 52  65  65 1 0.8 x 100 x 100 100 80 Reverse Percentage Example: 65% of the pages in a magazine are coloured. If there are 52 coloured pages, how many pages altogether?

  4. 130 9.10  130  130 1 0.07 x 100 x 100 100 7 Reverse Percentage Example: A bookseller makes 30% on a book and sells it for £9.10. What did she pay originally?

  5. Reverse Percentage • There are 18 soft-centred chocolates in a box. This is 72% of the total. How many in the box altogether? • 12.5% of Fred’s phone calls (9) were not from his friends. How many calls altogether. • A second-hand car is priced at £6440. If it’s value has depreciated by 15%, how much was it worth new? • Some trousers were increased by 20% to £36. What was their original cost.

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