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
PE
Related Maths GCSE answers
All answers ▸A ladder of length 6.5m is leaning against a vertical wall. The foot of the ladder is 1.5m from the wall. Calculate the distance the ladder reaches up the wall to 3 significant figures.
How should I approach my GCSE maths paper?
The formula to convert from degrees Fahrenheit to degrees Celsius is C=(F-32)*(5/9). If it is 32 degrees Celsius, what is the temperature in Fahrenheit?
A rectangle has an area of 20cm^2. Its length and width are enlarged by a factor of 3. Find the area of the enlarged rectangle.