Mary has 23 marbles. 7/23 pf the marbles are yellow and 13/23 of the marbles are blue...?

Mary has 23 marbles. 7/23 pf the marbles are yellow and 13/23 of the marbles are blue. The rest of the marbles are green? Explain how you know

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  • Anonymous
    1 decade ago
    Best Answer

    As marry has 23 marbles and it is easily shows that 7/23 means 7pf out of 23 are yellow. On the other hand 13/23 says that 13 pf of 23 are blue. So rest of the marbles are green. So,

    23-(13+7) = 3 marbles are green.

    Now if you say how do I know that that is green, It is the law of basic colors that if you mix up yellow and blue they will form green.

  • 1 decade ago

    If there are 23 marbles, then 1 marble is 1/23 of the total. 7 marbles are yellow, 13 are blue.

    7 + 13 = 20

    That leaves 3 marbles that are green.

  • 1 decade ago

    try adding 7 and 13 and then subtracting from 23 you find how many marbles are left that haven't been designated as a color and that should be blue

    Source(s): myself
  • 6 years ago

    add three + thirteen and subtract it by 23 and you should get three.

    Source(s): work it out >w<
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