全部制造的rakes有4X只 (一共有4X之要被运送) 月份 未被运送的rakes 三月 7X/2 四月 6X/2 五月 5X/2 六月 4X/2 七月 3X/2 八月 2X/2 九月 X/2 十月 0 storage cost: 0 +(7X+6X+5X+4X+3X+2X+X)/2 =28X/2=14X 0:11~2月 (7X+6X+5X+4X+3X+2X+X)/2:3~10月 14X*0.1=1.4X ※ 引述《uuhambur (威尔柏 )》之铭言： : Q11: : A certain business produced x rakes each month form November through : February and shipped x/2 rakes at the beginning of each month from March : through October. The business paid no storage costs for the rakes from : November through February, but it paid storage costs of $0.10 per rake : each month from March through October for the rakes that had not been shipped. In terms of x, what was the total storage cost, in dollars, that the business paid for the rakes for the 12 months form November through October? : A. 0.40x : B. 1.20x : C. 1.40x : D. 1.60x : E. 3.20x : 请问此题怎解?THX --

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