1. Find the principal on a loan of that was paid P13, 450 after ordinary interest was charged at 11% for 90 days. 2. Find the term of a loan if its principal amount is P20,000, the interest rate was charged to 12%, and the maturity value is P26,000. 3. Find the interest rate on a loan of P1, 800 that was paid P 1, 845 after 60 days from the date of loan. The interest charged was ordinary interest. 4. Find the value of P36, 000 due in 7 years, if money is invested at 5% per year. 5. Accumulate P6,000 due in 15 years if money is worth 6% semi-annually