Предмет: Математика, автор: danila1605

оператор набирал рукопись на компьютере три дня.в первый день он набирал 30% всей рукописи .отношение количества страниц  ,набранных им во второй день ,к количеству страниц,набранных в третий день ,равно 5:2.во второй день оператор набрал на 27 страниц больше ,чем в третий день .сколько всего страниц в рукописи?

 

Ответы

Автор ответа: Шкенц
0
"Отношение количества страниц, набранных им во второй день, к количеству страниц, набранных в третий день, равно 5:2. Во второй день оператор набрал на 27 страниц больше, чем в третий день" Разница между количеством частей во второй и третий дни - 3, на которую приходится 27 страниц. Значит, в одной части 9 страниц. Значит, во второй день - 45 стр., а в третий - 18 стр. За второй и третий день - 63стр., что является 70%. Находим количество страниц всей рукописи:
63/70 *100=90.
Автор ответа: айша110
0
не понятно
Автор ответа: айша110
0
надо писать понятнее
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