Simple interest? question series

Profit Or Loss (Recap)|Simple Interest|Question Practice|OMR

Difference between compound interest and simple interest over two years

The difference between the compound interest and the simple interest on a certain sum for 2 years is equal to the interest calculated for 1 year on one year's simple interest. (True / False).

The simple interest accrued in 2 years on a principal of 24000 is one-eighth the principal. What is the rate of simple interest per cent per annum ?

Same principal is invested in schemes of compound interest and simple interest. The interest obtained in simple interest and compound interest schemes after 2 years are Rs 1200 and Rs 1290 respectively. If the rate of interest is 15%, then what is the principal (in Rs)?

The simple interest on a certain sum of money for 3 yr at 8% pa is half the compound interest on X 8000 for 2 yr at 10% pa. Find the sum on which simple interest is calculated.