Final answer:
Aboubakar, who initially had $193 in his account, withdrew $81 for bills, leaving him with $112. At the end of the month, he decided to put 3/4 of his remaining balance into a college savings fund, which is $84.
Step-by-step explanation:
The problem presented is based on the subject of Mathematics, specifically arithmetic operations and fractions. At the beginning of the month, Aboubakar had $193 in his account. He had to pay bills, which led him to draw $81 from his account. To know the balance after the withdrawal, we need to subtract the amount withdrawn from the initial balance: $193 - $81, which results in $112.
At the end of the month, Aboubakar has chosen to put 3/4 of his balance into a college savings fund. To find out exactly how much money that is, we simply multiply the balance by 3/4: $112 * 3/4, which equals to $84.
So, Aboubakar has put $84 in his college savings fund.
Learn more about Operational Arithmetic