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teal
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initially we assume total revenue 100$ and then 40+40 =80$, little bit confused ,please explain it?
Bunuel
Official Solution:

In November, a company sold 3,000 units of Model A and 1,000 units of Model B. Model A contributed 60% to the company's total monthly sales revenue in dollars, while Model B contributed the remaining 40%. If the company had sold 1,000 fewer units of Model A than they actually did, what percentage of the total monthly sales revenue in dollars would have been attributed to Model A?

A. 48
B. 50
C. 52
D. 54
E. 55


Suppose the total sales revenue in November was $100. In this case, Model A contributed $60 and Model B contributed $40.

If the company had sold 1,000 fewer units of Model A than they actually did, it would have sold only 2,000 units of Model A. This is 2/3 of the units of Model A that were actually sold. Consequently, Model A would have contributed 2/3 of its original contribution, amounting to $40. In this scenario, the total revenue would have been $40 + $40 = $80. Therefore, 50% of the total monthly sales revenue in dollars would have been attributed to Model A.


Answer: B­
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hello TTP , would you please solve this
teal
In November, a company sold 3,000 units of Model A and 1,000 units of Model B. Model A contributed 60% to the company's total monthly sales revenue in dollars, while Model B contributed the remaining 40%. If the company had sold 1,000 fewer units of Model A than they actually did, what percentage of the total monthly sales revenue in dollars would have been attributed to Model A?

A. 48
B. 50
C. 52
D. 54
E. 55

M15-34

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Let \(S\) denote the total November sales of the company. The price of an item of model A = \(0.6*\frac{S}{3000}\) ; the price of an item of model B = \(0.4*\frac{S}{1000}\) . If the company had sold 2000 items of model A, the revenue from sales of model A would have amounted to \(0.6*\frac{S}{3000}*2000 = 0.6S*\frac{2}{3} = 0.4S\) which is equal to the revenue from sales of model B. So, in the hypothetical case described in the stem, the two models would have accounted for 50% of the monthly sales each.

In the above explanation, when the final calculation gives you 0.4S how is that 50% of S shouldn't that be 40%??
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