Предмет: Математика, автор: 131006

в кинотеатре показывают фильм длительностью которого 2 часа 25 минут. После каждого сеанса устраивается перерыв на 15 минут. Третий сеанс закончился в 19:20. Во сколько начался первый сеанс?

Ответы

Автор ответа: СолейОгнева27

0

1) 2×3=6+25×3=75=1ч 15 мин= 7 ч 15мин- сеансы
2) 15×2=30 минут два перерыва
3)7 15 + 30=7ч 45мин
4)19 20 - 7 45 = 11 ч35 мин- первый сеанс начало

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