Предмет: Алгебра, автор: кке800

за 3 дня мастер изготовил 90 деталий Впервый день на40% меньше чем во второй а в третий в 2 раза больше деталий Сколько деталий изготовил мастер во второй день ?

Ответы

Автор ответа: студент1994
0

За х берем кол-во деталей сделанных за 2 день

в 1 день  - 100%-40%=60% от 2дня, т.е. - 0,6Х

3 день - 2Х

Составляем уравнение 0,6х+х+2х=90,

3,6Х = 90, отсюда х= 25 деталей изготовил мастер во второй день

Автор ответа: VTany1998
0
За х берем кол-во деталей сделанных за 2 день в 1 день - 100%-40%=60% от 2дня, т.е. - 0,6Х 3 день - 2Х Составляем уравнение 0,6х+х+2х=90, 3,6Х = 90, отсюда х= 25 деталей изготовил мастер во второй день
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