Based on the information given what he should with the $300 is: Pay it toward his credit card bill, because it has the highest interest rate.
What is interest rate:
Interest rate can be defined as the amount that is charge on the amount borrowed or loan amount.
Based on the given details the interest rate given are;
Saving account=2% of $1,000
Student loan=4.6% of $40,000
Credit card bill=23.4% of $1,500
We can see that credit card bill has the highest interest rate of 23.4%, therefore the budget surplus amount of $300 should be paid toward the credit card bill because it has the highest interest rate.
Inconclusion what he should with the $300 is: Pay it toward his credit card bill, because it has the highest interest rate.
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