answer 1-5 pls. thanks

1. A person deposits Php 10,000.00 in the bank which pays 7% simple interest per year. Compute for the for the value of his deposits on the following conditions: a. after 500 days b. from May 28, 2017 to January 31, 2019. 2. In a simple interest, a money doubles itself after 15 years. Find the number of years it will take to triple itself. 3. A sum of money amounts to Php 30,200 after 5 years and Php 40,500 after 6 years. a. Compute for the principal amount b. Compute for the interest after 10 years. 4. A person invested Php 50,000 in two accounts, which pay 6% and 8% interest annually. The amount invested at 8% rate is 110% of the amount invested at 6% rate. After four years, he earns Php 7200 in interest. How much did he invest at the 6% rate? 5. Determine the simple interest rate on a loan of Php 250,000 payable for 8 years to equalize a loan that is Php 500,000 payable for 5 years with a rate of 12%