Simple interest is given by `I=(PTR)/100`. If P=₹900, T= 2 years, and R=`5%` find the simple interest.

P=₹ 2500, T=2 years 6 months, R=6% then A =_______

P=₹12,000, R= 6% T = 2 years then I =?

Find the rate of interest if P =1000, I = 200,T = 2.

A child friendly bank announces a savings scheme for school children. They will give kiddy banks to children. Children have to keep their savings in it and the bank collects all the money once in a year. To encourage children savings, they give 6% interest if the amount exceeds by ₹10,000, and other wise 5%. Find the interest received by a school if they deposit is ₹9000 for one year.

I = ₹3927, T = 2 years 4 months, R = 8% then P = __________

How much compound interest is earned by investing Rs 20 000 for 4 years at 5% per annum compounded annually. ?

If T= 4 years, P=₹6500, A= ₹8840, then rate of interest ®=_________%

How much compound interest is earned by investing ₹ 20 000 for 5 years at 5% per annum compounded annually. ?

How much compound interest is earned by investing ₹20000 for 6 years at 5% per annum compounded annually?

A sum of Rs. 1000 is invested at 8% simple interest per year. Calculate the interest at the end of each year. Do these interests 1^(st), 2^(nd) and 3^(rd) years form a AP? If so, find the total interest to be paid for 30 years making the use of this fact.