Marco predicts expenses of $18,750 for one year and expects $3,450 in grants annually. How much will Marco need to contribute for one semester of his education?

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Multiple Choice

Marco predicts expenses of $18,750 for one year and expects $3,450 in grants annually. How much will Marco need to contribute for one semester of his education?

Explanation:
Start with the idea of net cost for the year after aid, then adjust for the semester. Subtract the grants from the total expenses to find what Marco must cover himself each year: 18,750 minus 3,450 equals 15,300. A semester is half a year, so half of that yearly net cost is what he needs for one semester: 15,300 divided by 2 equals 7,650. Therefore, Marco would contribute 7,650 for one semester. The other numbers come from misplacing the halves or subtracting grants at the wrong step, which changes the base amount you’re halving.

Start with the idea of net cost for the year after aid, then adjust for the semester. Subtract the grants from the total expenses to find what Marco must cover himself each year: 18,750 minus 3,450 equals 15,300. A semester is half a year, so half of that yearly net cost is what he needs for one semester: 15,300 divided by 2 equals 7,650. Therefore, Marco would contribute 7,650 for one semester. The other numbers come from misplacing the halves or subtracting grants at the wrong step, which changes the base amount you’re halving.

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