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In a bag of beads, the ratio of the number of orange to blue to white is 13:7:4. If the number of orange beads minus the number of white beads is 54, how many blue beads are there?

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Answer:

42 blue beads

Step-by-step explanation:

Solution:

Let's suppose the numbers as 13x, 7x and 4x respectively..

Where,

Orange = 13x

Blue = 7x

White = 4x

According to the question,

13x - 4x = 54

or, 9x = 54

or, x = 54/9

or, x= 6

Now,

Blue beads = 7x

= 7 × 6

= 42..

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