1. 500 was invested at 12% per annum simple interest and a certain sum of money invested at 10% per annum simple interest. If the sum of the interest on both the sum after 4 years is 480, the latter sum of money is ?450 750 600 550

(a) $855 simple interest was paid when $4500 was invested at 4.75% per annum.Determine the period of investment.(b) Mrs. Woods borrowed a sum of money from a bank at 12.5% per annum for 6 yearsand paid $6375 simple interest. Calculate the sum of money mrs. Wood borrowedfrom the bank.(c) The simple interest on $15 000 for years is $4950. Calculate the rate percent perannum.

The simple interest on a sum of money in 5 years at 12 % per annum is Rs. 400 less than the simple interest accrued on the same sum in 7 years at 10 % per annum. Find the sum.

A sum of 5000 is invested in which the investor gets 800 as simple interest at the rate of 4 percent per annum. To get an interest of 2000 rupees on the same sum in the same number of years, what will be the rate of interest?

If the difference between the simple interest on a certain sum of money for 4 years at 2.5% per an-num and the simple interest on the same sum for the same period at 3% per annum is Rs. 60, then find the sum.

The interest ($/) received from an investment varies jointly as the interest rate per annum (%) and the period of investment (T years). If a sum of money is invested for 2 years at an interest rate of 8% p.a., the interest received will be $800. (a) Express I in terms of r and T. (b) If the same sum of money is invested for 3 years at an interest rate of 14% p.a., find the interest received.