※ 引述《luckykudo (不问岁月任风歌)》之铭言： : Month Average Price per Dozen : April $1.26 : May $1.20 : June $1.08 : The table above shows the average (arithmetic mean) price per dozen : of the lare grade A eggs sold in a certain store during three successive : months. If 2/3 as many dozen were sold in April as in May, and twice as : many were sold in June as in April, what was the average price per dozen : of eggs sold over the three-month period? : (A) $1.08 : (B) $1.10 : (C) $1.14 : (D) $1.16 : (E) $1.18 : 照题目的意思来看 : 我的算法 : A:M:J=6:4:3 : 1.26*6+1.2*4+1.08*3=15.6 : 15.6/(6+4+3)=1.2→没选项.... : 不知道哪个环节出错... : 老师解答是给(D) 题目的意思好像是 2/3 as many dozen were sold in April as in May -> A:M = 2/3 : 1 = 2:3 twice as many were sold in June as in April ->A:J = 1:2 故 A:M:J = 2:3:4 1.26*2+1.2*3+1.08*4=10.44 10.44/9=1.16 应该是这样吧 --

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