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

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

Arif took a loan of ₹ 80,000 from a bank. If the rate of Interest is 10% per annum, find the difference in amounts he would be paying after 1"" 1/2 years. If the interest is compounded half yearly.

Arif took a loan of ₹ 80,000 from a bank. If the rate of Interest is 10% per annum, find the difference in amounts he would be paying after 1"" 1/2 years. If the interest is compounded annually.

Find the sum of the G. P.: 8/10, 8/100, 8/1000, 8/10000, … to 55 terms.

Find the amount and the compound interest on ₹6500 for 2 years, compounded annually, the rate of Interest being 5% per annum during the first year and 6% per annum during the second year.

Find the sum of: (i) the first 1000 natural numbers, (ii) the first n natural numbers.

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.

Find the interest on a sum of ₹8250 for 3 years at the rate of 8% per annum.

In 4 years, ₹6500 amounts to ₹8840 at a certain rate of interest. In what time will ₹1600 amounts to ₹1816 at the same rate?