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 ▸Solve the simultaneous equations (1) 2a - 5b = 11 (2) 3a + 2b = 7
Solve the simultaneous equations 5x + y = 21, x - 3y = 9
Solve for x in the following equation using the quadratic formula, completing the square and factoring method: 2x^2-x-1=0
There are 30 kg of potatoes in a wheelbarrow. A farmer adds some carrots into the wheelbarrow. The total weight of the wheelbarrow now is 110 pounds. What weight of carrots did the farmer put into the wheelbarrow? 1 kg = 2.2 pounds