Предмет: Математика, автор: UCHILKAdura1

Необхідно прочитати книжку, в якій 280 сторінок. За перший учень прочитав 35% усієї книжки, за другий - 30%

Ответы

Автор ответа: ffii1a
3
В первый день прочитали: 280*25:100 = 280:4 = 70 страниц
Во второй день прочитали: 280*30:100 = 28*3 = 84 страницы
В третий день осталось прочитать: 280 - 70 - 84 = 126 страниц
Автор ответа: surdasa059
2

Ответ:

280 множимо на 25:100=280:4= 70 за перший день

280 множиио на 30:100=23 множимо на 3 =84 за другий день

280-70-84=126(сторінок )


UCHILKAdura1: Дякую, но я вже написав контрольну роботу.
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