[問題] 數學求解
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
答案是C
請高手解答 感謝
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