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7 red beads for every 4 blue beads if i use 21 red beads how many blue  do i have

 Nov 9, 2020
 #1
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based on the given ratio:

7:4

we multiply the 7 by 3 we do the same with 4

21:12

so we have 12 beads 

coolcoolcool

 Nov 9, 2020

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