Leticia is the first Aeta in their region who topped the Licensure Examination for Teachers. As an
incentive, their local government unit granted her a cash incentive of Php 32,000. She plans to
invest a portion of the incentive at 9% interest and the remaining amount at 10% interest per year.
If she aims to earn a total interest of Php 3,000 from the two investments in a year, how much
money must she invest at 10% interest?