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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 22, 2023
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ratio of yellow, green, blue, and white marbles is 1:2:3:4, so ratio of blue marbles to total marbles is 3:(1+2+3+4)=3:10

x: the total number of blue marbles

3/10 = x/180

multiplying both sides by 180,

x = 54

 Jun 22, 2023

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