Предмет: Математика, автор: kotegov2003

после уценки на 10% цена холодильника стала 72 900тг.Какова цена холодильника до уценки?

Ответы

Автор ответа: Pоlly
2
110%-10%=90 %  цена холодильника после уценки 

100%- х
90%- 72900
х=72900*100/90=81000 тг стоил холодильник до уценки
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