Find the percentage of... i.e. 25% of £480=£120
- Compound interest
Use Multipliers i.e. Increase of 7%=1.07; decrease of 7%=0.93
Multiply the multiplier with the principal amount i.e. 1.07 X £250
Use a power to get the interest for a 'multiple' period. i.e. 1.073 X £250 to get the interest for 3 years/months etc.
- Appreciation & Depreciation
When the value of something rises in value over…