Jordan has taken 5 math tests so far this semester. If he gets a 70 on his next

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问题 Jordan has taken 5 math tests so far this semester. If he gets a 70 on his next test, it will lower the average (arithmetic mean) of his test scores by 4 points. What is his average now?

选项 A、74
B、85
C、86
D、90
E、94

答案 E

解析

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Jordan has taken 5 math tests so far this semester. If he gets a 70 on his next

Jordanhad3hitsinhisfirst4baseballgamesand4hitsinhisnext4games.

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