Предмет: Математика, автор: ELIZAVETA20011

а)На приобретение оборудования химической лаборатории выделили 108 тыс.рублей.Это 60% стоимости необходимого оборудования.Сколько денег нужно добавить на покупку оборудования?
б)Банк начисляет на вклад ежегодно 12%.Сколько денег будет на счету через год,если в начале года было вложено 6000 р.?
в)Костюм ,цена которого 2500р.,уценили на 15%.Чему равна новая цена?
помогите плиизз...если можно подробно.

Ответы

Автор ответа: aselya2002

А)100%-60%=40%. 40%*108=4320

Автор ответа: vit40

а. 108000/60*40=72000руб надо добавить
б.6000/100=60(1℅) 60*12=720 720+6000=6720
в. 2500/100=25 25*15=375 2500-375=2125

Автор ответа: Аноним

Ещё один способ: 12%=0,12; 6000*0,12=720(р)

Автор ответа: Аноним

6000+720=6720

Автор ответа: Аноним

ой это под буквой Б

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