GMAT
题目
The average length of 6 snakes is 80 cm. If the average length of one third of the snakes is 70 cm, what is the average of the other snakes?
解析
6条蛇的长度总和 = 480
2条蛇的长度总和 = 140
4条蛇的长度总和 = 340
4条蛇的平均长度 = 85
选项：B
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公众号The average length of 6 snakes is 80 cm. If the average length of one third of the snakes is 70 cm, what is the average of the other snakes?
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