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NikitaRu11
@NikitaRu11
August 2022
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glebashot
Verified answer
X -- вся банка.
x - 0.2*x = 0.8*x
0.8x - 0.4*0.8*x = 0.8x - 0.32x = 0.48x
0.48 - 0.7*0.48*x = 0.48 - 0.336x = 0.144x
0.144x = 180
x = 180/0.144 = 1250
Ответ: Было 1250 грамм варенья.
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Verified answer
X -- вся банка.x - 0.2*x = 0.8*x
0.8x - 0.4*0.8*x = 0.8x - 0.32x = 0.48x
0.48 - 0.7*0.48*x = 0.48 - 0.336x = 0.144x
0.144x = 180
x = 180/0.144 = 1250
Ответ: Было 1250 грамм варенья.