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For every 2 red marbles there are 7 blue marbles in a bag of marbles. How many blue marbles would there be in a bag of 117 marbles?

Respuesta :

LarissaK
2 red marbles   =  x red marbles 
7 blue marbles = 117 blue marbles    <<<PROPORTION
(total)                    (total)

117x2 =  234 
    7     =   7         <<< = 33.42857143
                   here's a simpler way of writing that>>> 33.4 or 33



merxinda
There are 26 red marbles and 91 Blue marbles.

Ratio: 2/7. 2+7=9(total)
117/9 = 13
2*13 = 26(red)
7*13 = 91(blue)

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