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Пирожные разложили в две коробки в отношение 7:4. Когда из одной коробки взяли 12 пирожных то в коробках стало поровну. Сколько пирожных было первоначально?
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Предмет:
Математика -
Автор:
yuliana - 5 лет назад
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Ответы 1
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Пусть х кг было пирожных, исходя из условия получаем 7х:4х, когда из одной взяли 12 кг. Стало поровну, значит 7х-12=4х, 7х-4х=12, 3х=12, х=4, значит В 1 коробке было 7*4= 28 кг, во второй 4*4=16 кг
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Автор:
flash - 5 лет назад
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Розкрийте дужки, вживаючи дієслова у Present Perfect, Present Simple, Present Continuous, Past Simple або Past Continuous.
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