Предмет: Математика, автор: Aranil08

Напишите пожалосто математику 1176

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Ответы

Автор ответа: charos85

1

760_100%

х_15%

760*15/100=114

15%=114

760-114=646

а)646тг

б) также 760*30/100=228

760-228=532

Автор ответа: grishkovanyush

1

Ответ: 1) 874 2) 532

Пошаговое объяснение: Цена товара 760 тг.

1) Сделаем пропорцию (если цену подняли, то 100% + 15% = 115%)

100% - 760 тг.

115% - Х

Х = 115 × 760 ÷ 100 = 874 (тг. последняя цена)

2) Сделаем пропорцию (если цену снизили, то 100% - 30% =70%)

100% - 760 тг.

70% - Х

Х = 70 × 760 ÷ 100 = 532 (тг. последняя цена)

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