Предмет: Математика, автор: chesdragon3

До василька на день народження прийшло 12 друзів.Він порівну пригостив їх цукерками.Раптом прийшли ще 3 друзів.З ними поділились цукерками,і всім теж дісталося порівну.Скільки цукерок було у Василька,якщо відомо,що їх було більше за 100, але менше за 140?
Саме дії з поясненнями будь ласка!!!Даю 30 балів, це к.р!!!!!!!!!!​

Ответы

Автор ответа: volna7
5

Відповідь:

У Василька було 120 цукерок.

Покрокове пояснення:

Кількість цукерок повинна ділитись без залишку одночасно на 12 та на 15.

Серед чисел в інтервалі від 100 до 140 є наступні числа, що діляться без залишку на 12

108 / 9 = 12

120 / 10 = 120

132 / 11 = 12

Серед цих чисел є лише одне, що ділиться без залишку на 15, це:

120 / 8 = 15

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