Compound & Simple Interest

Question 1:

Decrease £3100 by 22% over 7 years using compound interest.

£544.53

Question 2:

Decrease £500 by 22% over 10 years using compound interest.

£41.68

Question 3:

Decrease £1500 by 5% over 10 years using simple interest.

£750

Question 4:

Increase £3800 by 9% over 6 years using compound interest.

£6372.98