Sam Salverri is planning to retire in 15 years. Money can be deposited by 8% compounded quarterly. What quarterly deposit must be made at the end of each quarter until he retires so that he can make a...

Sam Salverri is planning to retire in 15 years. Money can be deposited by 8%
compounded quarterly. What quarterly deposit must be made at the end of each quarter until he retires so that he can make a withdrawal of P25,000 monthly over 10 years after his retirement? Assume that his first withdrawal occurs at the end of one month after his retirement.