Q1Mr. de Leon borrowed some money at the rate of 5% per annum for the first 2
years, at the rate of 9% per annum for the next 3 years, and at the rate of
12% per annum for the period beyond 5 years. If he pays a total interest of
₱ 10 625 at the end of 9 years, how much money did he borrow?

Q2 Find the exact and ordinary interest earned if ₱ 40 000 is invested at 15% simple interest for 200 days.

Q3 Determine the interest and maturity value of ₱ 70 000 if it is invested a 15%
simple interest for 145 days using exact and ordinary interest.