Михайло - ?, в 3 рази більше, ніж у Віті
Вітя - ? разом 240 деталей
Петрик - ?, в 2 рази більше, ніж у Михайла
Пошаговое объяснение:
1) Нехай Вітя зробив х деталей, тоді Михайло - 3х, а Петрик - 3х*2=6х.
Тоді за даними задачі, маємо рівняння:
х+3х+6х=240;
4х+6х=240;
10х=240;
х=240/10;
х=24(деталі)- зробив Вітя
2) 24*3=72(д.)- зробив Михайло
3) 72*2=144(д.)- зробив Петрик
Відповідь: 24 деталі робив Вітя, 72 деталі зробив Михайло, 144 деталі робив Петрик.
Пошаговое объяснение:
лва а аьвre4th is the first of many of our clients and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and