Предмет: Математика, автор: 1234luboznateln

Пожалуйстаподскажите решение задачи класс программа 2100
Из 336 рублей часть денег Оля отдала за билет на катер,который ходит по Волге вдоль Ипатьевского монастыря, а 3/5 оставшихся после этого денег потратила на покупку открыток с видами горда. У нее осталось 20 рублей. сколько стоил билет на катер?

Ответы

Автор ответа: ciaracruz

0

336-20=316
316:5*3=189(1ост)открытки
316-189=127(1ост)билет на катер

Автор ответа: vikykylya

0

пусть х руб -билет на катер, тогда (336-х)*3/5 руб — потратила на покупку открыток, и согласно условию запишем:336-х-(336-х)*3/5=20 336-х-336*3/5+3х/5=20 336-201,6-20=х-3х/5 2х/5=114,4 2х=5*114,4=572 х=572/2=286 (руб) — стоил билет на катер.Отв.: билет на катер стоил 286 рублей.

Автор ответа: 1234luboznateln

0

спасибо,но нас так не учили решать,я еще в 4 классе

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