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The price of a book is £4. In a sale the price is reduced by 30%. Work out the sale price.

The full price (100%) is £4The sale price is 30% less. So the sale price is 70% of the original price.£4 * 0.7 = £2.80
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Answered by Elakkeya J. • Maths tutor
5659 Views

These are the selling prices of 5 houses in 2007: £145 000, £170 000, £215 000, £90 000, £180 000. Work out the mean selling price.

There are different types of averages: the MEAN, the MEDIAN and the MODE. The mean average is where we add all the numbers up together and divide by the amount of numbers provided. So for this case, we would...
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Answered by Kate H. • Maths tutor
5161 Views

How do I work out the area of different shapes?

You know that when working out the area of a square or rectangle you do width X height. We know a triangle is always half of a square or rectangle, so you work out the width and height and then divide it by ...
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Answered by Alexandra C. • Maths tutor
4110 Views

How do you add indices?

When working with indices it is important to give examples. When the question is a times, you add the indices, and when it is a divide, you take the indices away. For example: 3(2) X 8(3) = 24(5) You times 3...
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Answered by Alexandra C. • Maths tutor
11795 Views

How do I use numerical methods to find the root of the equation F(x) = 0?

Generally you will be asked to find the root of an equation of the form F(x) = 0. In my answer below I will only touch on graphical methods, but will go into deeper detail on showing that a root lays in a gi...
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Answered by Mathew V. • Maths tutor
18802 Views