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The ratio of blue marbles to redmarbles in a bag is 11:9. If there are 99 blue marbles, in the bag, how many red marblesare there?



Answer :

marmal
[tex]Radio:11:9\\ 11--99\\ \ 9--x\\ x=\frac{9}{11}*99=81[/tex]
Edmund
[tex]ratio=11:9[/tex]
[tex]11:9=99:x[/tex]
[tex]11x=891[/tex]
[tex]\frac{11x}{11}=\frac{891}{11}[/tex]
[tex]x=81[/tex]

There are eighty-one marbles.

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