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7 x £0.87 = £6.09(6.09/5.97) x 100 = 102.01%so percentage profit is 2.01% to 2 d.p.

Surds are exact - they can’t be rewritten as a decimal or fraction without introducing a rounding error. If we’re using numbers in a calculation, keeping them as exact as possible until we round to the re...

First off, roots means solve for x. 0 multiplied by any number equals 0, therefore, either one of the brackets must itself equal 0.We can solve this by firstly setting 2x-5 = 0, and solving for x. (+ 5) t...

To begin a stem and leaf diagram you will need to first order the data given to you into the question. The data in your stem and leaf must be in ascending order and grouped into tens. Draw the table separ...

Firstly, multiply the whole equation by (4 - a) to cancel out the denominator, so the equation becomes: p(4 - a) = (3a + 5). Then expand the brackets: 4p - ap = 3a +5. Then rearrange the equation to: 4p -...