Предмет: Математика, автор: ralutin77

Товар в магазине стоил 5300 руб. Сначала стоимость снизили на 16 %, а потом повысили на 13 %. Какова конечная стоимость товара?

Стоимость товара после понижения цены:

Ответ:

ПОМОГИТЕ ПЖ!


nikitavlasov202020: Эта задача решается с помощью пропорций

Составляем первую пропорцию

1)5300 р.-100%

x р.-87%

100x=461100(сокращаем(убираем одинаковое количество нулей))

x=4611 рублей

Составляем вторую пропорцию

2)4611 р.-100%

x р.-113%

100x=521043

x=521043:100

x=5210,43 рублей

Ответы

Автор ответа: Artsounds
4

Ответ:

16\% =  \frac{16}{100}  = 0.16

13\% =  \frac{13}{100}  = 0.13

___________

Стоимость товара после снижения цены на 16% ( рубл. ) :

5300 - 5300 \times 0.16 \\ 5300 - 848  \\ 4452

Конечная стоимость товара ( рубл. ) :

4452 + 4452 \times 0.13 \\ 4452 + 578.76 \\ \boxed{5030.76}

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