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3. The total interest earned after one year when Php 100 000 is invested, part of 6% annual interest rate and the remaining part at 7.5% annual interest rate

Sagot :

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Php 100,000 x .06 = Php 6,000
Php 100,000 x .075 = Php 7,500
6,000 + 7,500 = 13,500 total interest
100,000 + 13,500 = 113,500 total amount