A certain sum amounts to Rs. 320 at 6% per anuum simple interest and to Rs. 360 at 8% per annum simple interest. Find the principal.

A sum amounts to Rs. 3600 at 2% per annum under simple interest and Rs. 4800 at 4% per annum under simple interest. The time taken is ___.

Ram borrows a certain sum of money at 8% per annum simple interest and Rahim borrows Rs 2,000 at 5% per annum simple interest. If the interest at the end of 3 years is equal, then the amount borrowed by Ram is

On an amount simple interest of 1.5 years at 8% per annum is Rs. 420 . find the principle.

Find the simple interest on Rs. 5000 at 8% per annum in 3 years

A sum amounts to ₹3626 in 219 days at 6% per annum simple interest . The sum is

A certain sum amounts to Rs. 9243.20 in 1^(1/2) years at 4% p.a. simple interest. What will be the simple interest on the same sum for 7^(1/2) years at 8% per annum?