Предмет: Математика, автор: Polina04022002

После понижения товара на 20% товар стал стоить 488 руб. Какова первоначальная цена товара?

maskagus: 488/100*20=97,6
488+97,6=585,6

maskagus: у меня инет не работает, а помочь хочется

Ответы

Автор ответа: vlzlama

0

пусть цена товара х
тогда цена товара после понижения 0,8х
0,8х=488
х=488/0,8
х=610

Polina04022002: а почему 0,8?Если по идеи должно 0,2

jekadva: была X ...после понижения- (X-0,2=0,8)

Polina04022002: спасибо

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