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в мае билет на самолёт стоил 17000 рублей . В июне цены выросли на 20% , а в июле понизились на 20% , сколько будет стоить билет на самолёт в июле ? ПОЖАЛУЙСТА ПОМОГИТЕ ОЧЕНЬ СРОЧНО НАДО !!!!!
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Предмет:
Математика -
Автор:
janeumyn - 5 лет назад
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Ответы 4
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а зачем два раза вычитать 20400
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Автор:
madisondzdt - 5 лет назад
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0
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??
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Автор:
anthonyhxwe - 5 лет назад
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0
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17000*(1+0,2)*(1-0,2)=16320
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Автор:
mckinney - 5 лет назад
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0
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17000 + 17000 : 100% * 20% = 17000 + 3400 = 20400 (руб.) - стоимость билета в июне.20400 - 20400 : 100% * 20% = 20400 - 4080 = 16320 (руб.) - стоимость билета в июле.Ответ: 16320 рублей.
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Автор:
stokes - 5 лет назад
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0
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