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In Chemistry class, Andrew has earned scores of 64, 69, and 73 on three tests. He must maintain an average of 70 to pass the course. What score must Andrew earn on the final exam to pass the course?
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In Chemistry class, Andrew has earned scores of 64, 69, and 73 on three tests. He must maintain an average of 70 to pass the course. What score must Andrew earn on the final exam to pass the course?

User Aurea
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64 + 69 + 73 = 206 ÷ 3 = 68 ish
if he get at least 74 :
64 + 69 + 73 + 74 = 280 ÷ 4 = 70
he will pass course with straight 70
User Kkk
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