coollid876
17.03.2020 •
Mathematics
Dla członkiń zespołu tanecznego planowano kupić jednakowe spódnice po 60 zł każda.
Gdy sprzedawca obniżył cenę tych spódnic o 20%, wówczas za tę samą kwotę można było kupić o 5 spódnic więcej. Ile można było kupić spódnic po obniżonej cenie?
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Ответ:
25
Step-by-step explanation:
Let's say x is the number of skirts, and C is the cost. At 60 zł per skirt, the cost is:
C = 60x
When the price is reduced by 20%, the price of each skirt becomes 0.80 (60 zł) = 48 zł. At this new price, the team can buy x+5 skirts at the same cost.
C = 48(x + 5)
Setting the expressions equal and solving for x:
60x = 48(x + 5)
60x = 48x + 240
12x = 240
x = 20
The team could buy 20 skirts at the original price, which means they can buy 25 skirts at the reduced price.
Ответ:
14.5 years
Step-by-step explanation:
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