QUESTION NO:4 a. A sum of Rs. 25,000 becomes Rs. 27,250 at the end of 3 years when calculated at simple interest. Find the rate of interest (05 Marks) b. A sum of AED 40,000 becomes AED 43,000 at the end of 3 years when calculated at simple interest. Find the rate of interest. (05 Marks) . Luke has $18 000 to invest for 2 years. He has the following options: (10 Marks) (a) A building society account, paying a return of 5.56% per annum with monthly rests. (b) A business venture with guaranteed return of 5.65% p.a. and interest paid daily. (c) A term deposit at 5.5% compounded annually. (d) Shares, paying a rate of 5.48% p.a with dividend paid quarterly. Advise Luke which option to take if all the investments are equally secure