5) At what rate percent per annum will a sum of money double itself in 10 years? (2 marks) 6) What sum of money will produce $30000 interest in 2 years and 3 months @ 2.5%p.a. SI ? (2 marks) 7) A sum of $ 46,875 was lent out at SI and at the end of lyear 8 months the total amount was $50,000. Find the rate percent per annum. (2marks) 8) Rs. 10,000 is invested @10% pa. what is the amount after 2 years if compounding is done- a. Annually b. Semi annually c Quarterly d. Monthly (2 marks)