Astudent needs at least 80% of all points on the tests in a class to get a b. there are three 100-point tests and a 250-point final. the student's test scores are 72%, 85%, and 78% for the 100 point tests. what is the least score the student can make on the final and still get a b?

How many points are there total? (3*100)+250 = 550

So far, he has 72 + 85 + 78, or 235

He needs 0.80 * 550 for a B, or 440 points

440 - 235 = 205 points on the final to get a B

Percentage-wise, he needs 205/250, or 0.82

the correct answer is 5

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