At the end of year 1, when the second payment of £ has been made, the first investment of £ will be worth £ . So the total amount in the savings account is now £ .
At the end of year 2, when the third payment has just been made, the first investment is now worth £ and the second payment is worth £ . So the total amount is now £ .
At the end of year , the total amount is £ . Can you see what it will be?
The series in the brackets is a GP, where the first term is ? and the common ratio is ? So what is the sum to terms?
Can you complete it now?