Предмет: Математика, автор: лего2002

в двух рулонах было 864 м плёнки. сколько плёнки было в каждом рулоне, если в одном в 7 раз больше, чем в другом?

Ответы

Автор ответа: quack46

x-один рулон, тогда

7x-второй рулон

7x+x=864

8x=864

x=108

108*7=756

Ответ 108, 756

Автор ответа: АнастасияМатвеева

Пусть в первом рулоне х метров пленки, тогда во втором 7*х метров. Составим и решим уравнение:

7*х+х=864

8*х=864

х=864/8

х=108

Значит в первом рулоне 108 метров пленки, а во втором - 756 метров.

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