一道SAT数学题.if 4 bags of flour with an average weight of 15 pounds are put onto a shelf with 45-pound bags of flour,what is the average weight,in pounds,of all 8bags on the shelf?(A)5(B)10(C)15(D)20(E)25答案是10,但我怎么算都不是10..

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 20:48:59
xTNQ~&emꢋ .GTTT E@y;̊WsZҘ.6rι{1. k/'^\ f Д0D3.М'F oaډ朞iw9gf}H8 PEHOjs ! CbjhEvvէk F0i䬆'F7<5X ό#|%٬rVtDb"J1FnzRs͎e@ vŅ(8( 0Ш_&07h??;*ؕ,oe^r/q!"|Vf"[/R^᳴TO4fV>,FSPmZfӊن8~6wZq}"UO:,ArʬdґjIM0DBjK}MrAuV*u(1 @{}TmړeHQu1-܉k`#F:g?h7e~QT7*N&cv NcpUn@M ~H ^ tOkl\K-vw"FM$RhJ8JuR;=\[Xg"N:;1vD ! o{ xWM]Aǔ!!ཏbRDU)VJĂrr ʛ0st[GhqV|]A|;