Re: [計量] GWD5-11
※ 引述《uuhambur (威爾柏 )》之銘言：
: 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
: 請問此題怎解?THX
先用笨方法算
11月到隔年2月 總產量4x
3月到10月 每個月寄1/2x
計價的庫存是「當月未寄出」
所以三月會計價的庫存是 (4-0.5)x
以此類推到10月就全部寄光光了
庫存計價是(3.5+3+2.5+2+1.5+1+0.5+0)x X $0.10 = $1.4x
其實就是等差級數
我會建議這種題目，先看一次，不懂就列表
通常數字都很好算
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