Предмет: Математика, автор: dsukhova2020

Товар в магазине стоил 3100 руб. Сначала стоимость снизили на 10 %, а потом повысили на 20 %. Какова конечная стоимость товара?

dsukhova2020: там еще нужно стоимость товара после понижения цены

Ответы

Автор ответа: kdmkaa19

Ответ:

3100 руб.-100%

31•30=930-30%

3100-930=2170руб.после понижения на 30%

2170руб.-100%

21,7-1%

21,7•30=651-30%

2710+630=2821 руб.после повышения на 30%

Ответ:2821 рублей

Автор ответа: meowmeowmeow222

3100-100%
сначала -10%
потом +20%( ко второму)

1) 3100:100•10=310(рублей) -10 процентов от 3100
2) 3100-310=2790(рублей) -сначала
3)2790:100•20=558(рублей ) 20 процентов от 2790
4)2790+558=334=3348

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