Предмет: Математика, автор: Аноним

На двух участках земли посеяли рожь.Площадь первого участка 56га,второго-60га.На первом участке высеяли семян ржи на 432кг меньше,чем на втором.Сколько килограммов ржи высеяли на каждом участке?

Ответы

Автор ответа: nadegda39
0
Пусть на 1 га сеяли х кг ржи, тогда на 1 участок посеяли 56 х кг, а на 2-ой участок 60 х кг. Составим уравнение: 60 х - 56 х = 432
4 х = 432
х = 432 : 4
х = 108
Значит, на 1 га сеяли 108 кг, тогда на 1 участок посеяли 108 * 56 = 6048 кг, а на 2 участок 108 * 60 = 6480 кг
Ответ: 6048 кг, 6480 кг.
Автор ответа: Аноним
0
спасибо
Автор ответа: melisey
0
x- количество килограммов ржи, засеянных на 1 участке
х+432 - количество килограммов ржи, засеянных на 2 участке
Тогда
56/60=х/(х+432)
По свойству пропорции
56(х+432)=60х
56х+24192=60х
24192=60х-56х
24192=4х
х=24192/4=6048 кг - столько засеяли на 1 участке
6048+432=6480 кг - столько засеяли на 2 участке
Ответ: 6048,6480.
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