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raheeeq
20.09.2019 •
Mathematics
Gus and ike have a 5: 3 ratio of cards. if gus gives ike 15 cards they now have the same amount. how many cards to they have and how many did they start with?
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Ответ:
the second sentence gives us this knowledge:
5x-15=3x+15
and now we count:
5x-3x=15+15
2x=30
x=15.
so in the beginning Gus had 5x=5*15=75 and Ike 3x=3*15=45, and now they both have 60 cards each!
Ответ:
2. B2->C2
They are simply asking which equations are the same in system a and b and in system b and c.