Why do I keep getting the wrong answer when tackling percentage change questions?
Percentage change isn't always as simple as you think. Whilst taking into consideration if it is a percentage increase or decrease, you also need to consider whether you're calculating a result before or after the percentage change has taken place.
For example, are you working out the value of a £13500 car after a 15% depreciation, or are you working out the original value of a £800 sofa before it was in a 30% off sale? There are some tips that can be learnt to ensure you never get a percentage change question wrong ever again.
ES
Related Maths GCSE answers
All answers ▸What is the size of the interior angle of a regular 12-sided polygon?
A linear sequence starts, a + 2b, a + 6b, a + 10b …….. …….. The 2nd term has value 8. The 5th term has value 44. Work out the values of a and b
The first four terms of an arithmetic sequence are : 11, 17, 23, 29. In terms of n, find an expression for the nth term of this sequence.
There is a spinner game at a fair. The spinner is numbered with all even numbers from 2 to 12. Each section is equal in size. Dan has numbers 4 and 10. What is the probability that he wins a prize? Give your answer as a fraction in its simplest form.