What sum lent out at `3%` per annum simple interest would produce Rs 225 as interest in 5 years?

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

What sum of money lent out at 10% per annum would produce Rs 150 in 5 years?

A sum is split into two equal parts. One of part is lent at simple interest at 20% per annum for 6 years. The other part is lent at 40% per annum simple interest for 2 years. The difference in the interest is Rs 71. Find the total sum in Rs.

What sum of money lent at 6*5% per annum will produce the same interest in 4 years as Rs. 7,500 produce in 6 years at 5% per annum ?

If Rs. 300 is the interest paid on a certain sum at the rate of 5% per annum simple interest for a period of 5 years, then find the sum. (in Rs. )

What sum of money lent at 2% per annum under S.I. will yield the same interest in 3 years as Rs. 3600 yields in 7 years at the rate of 3% per annum S.I. ?