A-A+
After a store had sold k television sets for p
问题详情
After a store had sold k television sets for p dollars each, it reduced the price p of each set by 5 percent and then sold twice as many sets at this reduced price.
Column A Column B
The total revenue from the sale of
all of these television sets 2.95pk
A．if the quantity in Column A is greater
B．if the quantity in Column B is greater
C．if the two quantity are equal
D．if the relationship cannot be determined from the information given请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：一家商店以每台p美元售出k台电视后，把每台电视机的价格(p美元)降低了5％，然后以降低后价格卖出了2倍量的电视机。解：本题的正确答案为(B)。比较的左项为卖出这些台电视机的总销售额：pk+2pk(1-5％)=2.9pk
