7:6 267x35/35+30+24 267x30/35+30+24 267x24/35+30+24
5:4 =267x35/89 =267x30/89 =267x24/89
=35:30 =105(人) =90(人) =72(人)
30:24
=35:30:24 答:一年级有105人,二年级有90人,三年级有72人.
7:6 267x35/35+30+24 267x30/35+30+24 267x24/35+30+24
5:4 =267x35/89 =267x30/89 =267x24/89
=35:30 =105(人) =90(人) =72(人)
30:24
=35:30:24 答:一年级有105人,二年级有90人,三年级有72人.