1. A man borrows Php 64,000 from a loan association. In repaying this debt, he has to pay Php 4000 at the end of every 3 months on the principal and a simple interest of 16% on the principal...

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Extracted text: 1. A man borrows Php 64,000 from a loan association. In repaying this debt, he has to pay Php 4000 at the end of every 3 months on the principal and a simple interest of 16% on the principal outstanding at that time. Determine the total amount he has paid after paying all his debt.