An amount of Rs 5000 is put into three investments at the rate of interest of `6%,7% and 8%` per annum respectively. The total annual income is Rs 350. If the combined income from the first two investments is Rs 70 more than the income from the third, find the amount of each investment by matrix method.

An amount of Rs 5000 is put into three investments at the rate of interest of 6%,7% and 8% per annum respectively. The total annual income is Rs 358. If the combined income from the first taoinvestments is Rs 70 more than the income from the third, find the amount of each investment by matrirx method

An amount of Rs 10,000 is put into three investments at the rate of 10, 12 and 15% per annum. The combined income is Rs 1310 and the combined income of first and second investment is Rs 190 short of the income from the third. Find the investment in each using matrix method.

A total amount of Rs 7000 is deposited in three different saving bank accounts with annual interest rates 5%, 8% and 8 1/2% respectively. The total annual interest from these three accounts is Rs 550. Equal amounts have been deposited in the 5% and 8% savings accounts. Find the amount deposited in each of the three accounts, with the help of matrices.

A sum of Rs. 400 is lent for 3 years at the rate of 6% per annum. Find the interest.

A person deposits Rs. 25000 in a firm who pays an interest at the rate of 20% per annum. Calculate the income he gets from it annually.

Find the amount of Rs 2400 after 3 years, when the interest is compounded annually at the rate of 20% per annum.

Susan invested certain amount of money in two schemes A and B, which offer interest at the rate of 8% per annum and 9% per annum, respectively. She received Rs. 1860 as annual interest. However, had she interchanged the amount of investments in the two schemes, she would have received Rs. 20 more as annual interest. How much money did she invest in each scheme ?

Find the simple interest on Rs. 8250 at 8% per annum for 3 years. Also, find the amount.

Calculate the amount and the compound interest on Rs. 10,000 in 3 years at 8% per annum.

Find the amount and the compound interest on Rs. 16,000 for 3 years at 5% per annum compounded annually.