Предмет: Математика, автор: Анастасия2345678

Помогите мне сделать условия задач:
1.Штангист тяжёлой весовой категории поднял штангу массой в 156 кг,а штангист лёгкой весовой категории поднял штангу,масса которой составляет 9/13 массы первой. На сколько килограммов масса первой штанги больше массы второй штанги?
2.Сплав состоит из олова и сурьмы. Масса сурьмы в этом сплаве составляет 3/17 массы олова.Найдите массу сплава,если олова в нём 27,2 кг.

Ответы

Автор ответа: Аноним

Тяжелой к - 156 кг
Легкой к - ?(кг) 9/13 кг ( стрелочка к тяжелой

Сурьма - ?(кг) - 3/17 кг олова ( стрелочка к нему )
Олово - 27 , 2 кг

Автор ответа: Анастасия2345678

Спасибо большое

Автор ответа: mila3256

1)156:13=12 2)12*9=108 3)156-108=48 Ответ 48 (кг)

Автор ответа: mila3256

это решение

Автор ответа: Анастасия2345678

Да,спасибо,я уже поняла как решать,но всё равно спасибо!

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