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A car dealer received a shipment of cars, half of which were black, with the remainder consisting of equal numbers of blue, silv
A car dealer received a shipment of cars, half of which were black, with the remainder consisting of equal numbers of blue, silv
admin
2015-03-24
24
问题
A car dealer received a shipment of cars, half of which were black, with the remainder consisting of equal numbers of blue, silver, and white cars. During the next month, 70 percent of the black cars, 80 percent of the blue cars, 30 percent of the silver cars, and 40 percent of the white cars were sold. What percent of the cars in the shipment were sold during that month?
选项
A、36%
B、50%
C、55%
D、60%
E、72%
答案
D
解析
In the shipment, 1/2 of the cars were black. Since the remainder of the cars consisted of equal numbers of blue, silver, and white cars, it follows that
, or 1/6, of the cars were blue, 1/6 were silver, and 1/6 were white. Based on the percents of the cars of each color that were sold during the next month, the percent of the cars in the shipment that were sold during that month was
= 60%
The correct answer is Choice D.
This explanation uses the following strategy.
Strategy 1: Translate from Words to an Arithmetic or Algebraic Representation
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