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
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?
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?
数学人气:551 ℃时间:2019-10-11 10:11:21
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