calculate the simple interest on N7,500 for 8 years at 5% per annum.

Ladi sold a car for N84,000 at a loss of 4%. How much did ladi buy the car?

At what rate will the interest on N400 increases to N24 in 3 years reckoning in simple interest?

Musa borrows N10.00 at 2% per month simple interest and repays N8.00 after 4 months. How much does he still owe?

At what rate would a sum of N100.00 deposited for 5 years raise an interest of N7.50?