Simple interest calculations with technology

12 questions

1. If I increase £45 to £126, what is the percentage gain?
2. Find 52% of 800
3. A data analyst celebrates his investment increasing by 14% which is now worth £1094.40. How much did he originally invest?
4. Increase 11 by 15%
5. If I decrease £48 to £12, what is the percentage loss?
6. If I increase £75 to £97.50, what is the percentage gain?
7. What is the amount of simple 1.3% interest earned on an investment of £400 over 6 years?
8. What is the amount of simple 1.6% interest earned on an investment of £500 over 4 years?
9. What is the amount of simple 2.8% interest earned on an investment of £638 over 10 years?
10. What is the amount of compound 2.8% interest earned on an investment of £638 over 10 years?
11. What is the amount of compound 4.9% interest earned on an investment of £230 over 8 years (to 2 d.p.)?
12. What is the amount of compound 2.3% interest earned on an investment of £1000 over 20 years (to 2 d.p.)?

License: OGL