Sam invests £2000 as 2.8% per annum compound interest for 4 years.
(a) Work out the value of Sam's Investment at the end of 4 years.
Andy invests £12 000 in a variable rate compound interest account.
The interest is
2% for the first year
3.5% for the second year
5% for the third year
(b) Work out the value of Andy's investment at the end of 3 years.
​