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A bag contains yellow, green, blue, and white marbles.  The ratio of yellow, green, blue, and white marbles is 1:2:3:4.  If the bag contains 180 marbles, then how many blue marbles are there?

 Jun 26, 2023
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Assume:

the # of yellow marbles is x

the # of green marbles is 2x

the # of blue marbles is 3x

the # of white marbles is 4x

 

x+2x+3x+4x=180

10x = 180 

x = 18

 

the # of blue marbles = 3x = 3(18) = 54 marbles

 Jun 26, 2023

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