Впачке 250 листов бумаги. на распечатку одной рукописи ушло 60% пачки, на перепечатывание другой рукописи 3/4 от остатка. сколько осталось чистых листов бумаги? ответ: 25 листов. но ответ никак не
D13na
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29.06.2019 01:50
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250 - 150 = 100 листов осталось после распечатки первой рукописи
100*3/4 = 75 листов ушло на распечатывание другой рукописи
100 - 75 = 25 листов осталось чистых