Предмет: Математика, автор: Хатару

купили поросят. масса двух из них 27кг,трех по 32 кг и одного 18кг.найдите среднюю массу купленных поросят.

Ответы

Автор ответа: Танюююша
0

2 порос. по 27 кг  ]

3 порос. по 32 кг  } средняя масса - ? кг

1 порос. - 18 кг    ]

 

1. 3+2+1=6 (п.) - общее количества поросят

2. 2*27=54 (кг) - масса 2 поросят

3. 3*32=96 (кг) - масса 3 поросят(кг)

4. 54+96+18=168 (кг) общая масса

5. 168:6=28 (кг)

 

Выражение: (2*27+3*32+18):(2+3+1)=28 (кг)

Ответ: средняя масса купленных поросят 28 кг

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