Cenę pewnego towaru obniżono o 25zł, co stanowiło 40% dotychczasowej ceny. Ile wynosi cena tego towaru po obniżce?
x - cena towaru
25zł = 4/10x / :4/10
x=62,5 zł
25zl = 40%
x zl = 100%
40x = 25 * 100
40x = 2500
x = 62,5 zł
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x - cena towaru
25zł = 4/10x / :4/10
x=62,5 zł
25zl = 40%
x zl = 100%
40x = 25 * 100
40x = 2500
x = 62,5 zł