A sack contains red and blue marbles. The ratio of red marbles to blue marbles is 4:3. If there are 18 blue marbles in the sack, how many red marbles are in the sack?

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15-07-2014
Mathematics

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A sack contains red and blue marbles. The ratio of red marbles to blue marbles is 4:3. If there are 18 blue marbles in the sack, how many red marbles are in the sack?

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Mariamikaylaidn Mariamikaylaidn · Answer 1 · 2014-07-15T17:53:25-04:00

Mariamikaylaidn Mariamikaylaidn

15-07-2014

[tex]r:b=4:3 \\ \frac{r}{b}= \frac{4}{3} \\ \frac{r}{18}= \frac{4}{3} \\ r= \frac{18*4}{3} \\ r= 6*4 \\ r=24 \ red \ marbles[/tex]

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