" ¿rate per cent per annum will "₹728" produce "₹227.50" as simple interest in "5" y "y

.At what rate per cent per annum will Rs728 produce Rs227.50 as simple interest in year.

At what rate per cent per annum will ₹700 produce ₹168 as simple interest in 2 years ?

At what rate per cent per annum will Rs. 630 produce an interest of Rs. 126 in 4 years ?

At what rate per cent per annum will Rs 630 produce an interest of Rs 126 in 4 years?

What sum of money lent out at 16 per cent per annum simple interest would produce Rs. 9600 as interest in 2 years?

The simple interest on a certain sum for 8 years at 12 per cent per annum is Rs. 3120 more than the simple interest on the same sum for 5 years at 14 per cent per annum. Find the sum.

At what rate per cent per annum will Rs. 1000 amount to Rs. 1331 in 3 years. The interest is compounded yearly

At what rate per cent per annum will Rs. 2304 amount to Rs. 2500 in 2 years at compound interest ?