Предмет: Алгебра, автор: PaxaSobaka

Решите плиз с табличкой и проверкой. Две мастерские должны были пошить по 96 курток. Первая мастерская шила в день на 4 куртки больше чем вторая и поэтому
выполнила заказ на 2 дня раньше. Сколько курток шила в день каждая мастерская?

Ответы

Автор ответа: sova761
0
х-количество курток сшитых 2- маст. в день
х+4- количество курток сшитых 1- маст. в день
96/х -96/(х+4)=2
96(х+4)-96х=2х(х+4)
96х+384=2х^2+8х
2х^2+8х-384=0. делим все на 2. х^2+4х-192=0
Д=16+768=/784=28.
х1=12, х2=-16;
значит 2- мастерская в день шила 12 курток, 1- мастерская 16 курток.
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