[計量] 一題計量請教(語意不懂)
一題計量不懂，請好心人幫幫忙
A certain company finds that the profit from selling x units is $20 less than
the product of the number of units sold and the unit selling price of
s dollars. Which of the following is an expression, in dollars, for this
profit?
(A) 20-sx
(B) sx-20
(C) 20-(x+s)
(D) (x+s)-20
(E) xs/20
答案是B
想請問題目裡的第一個profit和最後的profit意思是不是不一樣
如果是那分別代表甚麼意思~為什麼最後答案是sx-20
謝謝大家幫忙！
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