Предмет: Математика, автор: nd1155

За первый день Антон прочитал 40% книги и 8 страниц.А за второй день 60% остатка и 4 страниц.За третий день 75% нового остатка и 3 страницы Сколько страниц в книге

Ответы

Автор ответа: 7773569

точно не уверено но попробую
40% -х
100%-40%=60%
60% - 8 стр
получается 40х8 и /60 ответ 16/3
16/3=5 целых 1/3
60% - х
40% - 4 стр
60х4/40=6
75% - х
25% - 3 стр
75х3/25=9
9+6+5 целых 1/3=20 целых 1/3 примерно равно 21
ответ 21 страница

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