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Bunuel
Last month, a certain manufacturer sold a total of 1,000 units of its two products, A and B. The selling price of each unit of product A was $1,500, and the selling price of each unit of product B was $2,000. How many units of product A did the manufacturer sell last month?

(1) Last month, the manufacturer's total revenue from the sale of units of products A and B was $ 1,600,000.

(2) Last month, the manufacturer's total revenue from the sale products A was 3 times the manufacturer's revenue from the sale of units of product B.

a+b=1000
1500a+2000b=sales

(1) Last month, the manufacturer's total revenue from the sale of units of products A and B was $ 1,600,000. sufic

1500a+2000b=1,600,000; substitute a=1000-b; b=200, a=800

(2) Last month, the manufacturer's total revenue from the sale products A was 3 times the manufacturer's revenue from the sale of units of product B. sufic

1500a+2000b=1,600,000; substitute 1500a=3(2000b); b=200, a=800

Ans (D)
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