Предмет: Алгебра, автор: Ян4иК9876

в пятых классах школы 80 человек. из них отличники составляют 21.25% . в шестых классах 90 человек . отличники составляют 20 % . в каких классахбольше отличников и на сколько человек ?

Ответы

Автор ответа: stepa1211
0

Найдём сколько человек отличников   80*0,2125 = 17 челов.  90*0,2= 18 человек.Тогда 17 меньше чем 18 на 1 человека

Автор ответа: оливка
0

1) 21,25%=0,2125

2)80 * 0,2125= 17(чел)-в пятых кл.

3)20%=0,20

4)90 * 0,20=18(чел)-в шестых кл.

5)18-17=1(чел)-в шестых кл. отличников больше, чем в пятых на 1 человек

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