TT GWD-21-13

找了半天MS以前没有这道题，我是跳着做的，不知道前面有没有重复，呵呵，希望NN来解答一下，谢谢~

Q13:

Last month, a certain manufacturer sold a
total of 1,000 unites 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 revenue from the sale of units of products A was 3 times
the manufacturer’s revenue from the sale of units of product B.

我觉得题目里没说revenue怎么算呀？