1. The best thing to do is to find out what 1% is. 235/100= 2.35 As you're looking for 27%, you then multiply 2.35*27= 63.45 As you're increasing it, you've then got to add this to the original amount. 235+63.45= 298.45
3. Find 1%. 1120/100= 11.2 As you're looking for 13.5%, you then multiply this by 13.5 11.2*13.5= 151.20 As you're subtracting, you then take this away from the original number. 1120-151.20= 968.80
4. This time, you can find 10%. 0.057/10= 0.0057 0.0057*5.5= 0.03135. You've then got to subtract this as you're decreasing the number. 0.057-0.03135= 0.02565.
Sally's investment is now worth £585. (Find the 30% and add it on) and Susie's investment is now worth £585 (Find the 10% and subtract). They both have the same amount of money.
