Предмет: Русский язык, автор: DimanWorlds

в школе количество мальчиков к девочкам относится как 5:4. найдите отношение мальчиков ко всем ученикам и девочек ко всем ученикам

Ответы

Автор ответа: zhenyaM2002
31
5+4= 9 частей всего
Мальчиков :   5/9 
5/9  *100 %  = 500/9 = 55  5/9 %
Девочек :   4/9
4/9   *100 %  = 400/9 = 44  4/9 % 
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