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22 March, 18:23

A box contains 225 marbles which are either red or blue. there are 31 more blue marbles than red marbles. how many blue marbles are in the box? blue marbles

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  1. 22 March, 18:44
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    225-35=194/2 because there is two colors red and blue you divide it and then answer is 97 and then you add 35+97=132 so there are 132 blue marbles
  2. 22 March, 18:45
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    Let x represent the number of red marbles, then blue marbles are represented by x + 31

    red + blue = 225

    x + x + 31 = 225

    2x + 31 = 225

    2x = 194

    x = 97

    Blue: x + 31 = 97 + 31 = 128

    Answer: 128 blue marbles
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