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steposvetlana [31]
3 years ago
7

A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 54 marbles in it. At least how many g

reen marbles does it have?
Mathematics
2 answers:
Hunter-Best [27]3 years ago
3 0
b\ \ \ \rightarrow\ \ \ the\ number\ of\ blue\ marbles\\g\ \ \ \rightarrow\ \ \ the\ number\ of\ green\ marbles\\\\b+g \geq 54\ \ \ and\ \ \ b=2g\\\\2g+g \geq 54\ \ \ \Leftrightarrow\ \ \ 3g \geq 54\ \ \ \Leftrightarrow\ \ \ g \geq 18\\\\Ans.\ At\ least\ 18\ green\ marbles.
Vilka [71]3 years ago
3 0
If we have twice as many blue marbles as green, we have 3 parts; 2 parts blue and 1 part greens. Therefore, 1/3 of the marbles are green

54/3=18
At least 18 of the marbles are green
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