Предмет: Алгебра, автор: катя2285

Решите пожалуйста нужно очень срочно!имеется два сосуда. первый содержит 100кг,а второй-50кг раствора кислоты различной коцентрации.Если эти растворы смешать,то получится раствор,содержащий 28 процента кислоты.Если же смешать равные массы этих растворов,то получится раствор,содержащий 36 процента кислоты.Сколько килограммов кислоты содержится в первом сосуде?

Ответы

Автор ответа: masha0603

пусть содержание кислоты в первом растворе x а во втором y

составим систему 100x+50у=28*150

100х+100у=36*200

вычтем и получим 50у=3000=>y=60

х=12

значит первый раствор 12 процентный а второй 60 процентный

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