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Maths I

Profit and loss

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# Calculating the percentage profit made

It is also possible to work out the percentage profit that is made on a deal. This is done using the profit and the price that something cost originally, before it was sold on (the Cost Price).

Percentage Profit = (profit/cost price) x 100%

The next example shows how this is done.

## Example

A hardware shop sells dustbins for £12. They originally cost £10. Find the percentage profit made.

Profit = £12 - £10

= £2.00

Percentage Profit = (profit/cost price)x 100%

=

= 20%

### Now try this question.

Question

Calculate the percentage profit made by the owner of the same hardware shop, and paint is sold for £6 per litre, when it originally cost £4.50 per litre.

Profit = £6 - £4.50

= £1.50

Percentage Profit = (profit/cost price) x 100%

=

= (i.e. {1 \over 3} of 100 \%)

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