一套课桌椅,课桌比椅子贵33元,已知课桌和椅子的价钱比是4：7,课桌和椅子各多少元?
人气：486 ℃ 时间：2019-10-11 10:11:21
解答
因为他们的比是4：7,又知他们之间相差33元,即可用差倍问题来解决：
7-4=3
33*3=11（元）
11*4=44（元）
11*7=77（元）
答：课桌77元,椅子44元
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