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18 May, 10:45

Tim has some marbles.

Sue has twice as many marbles as Tim.

Jim has 15 marbles.

Tim, Sue and Jim have a total of 63 marbles.

How many marbles does Tim have?

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Answers (2)
  1. 18 May, 13:04
    0
    Tim has about 24 marbles.

    If Jim has 15.

    And they all have 63.

    63-15=48

    48 divided by 2 is 24.
  2. 18 May, 13:12
    0
    We can solve this by setting up an equation. I am setting the amount of marbles that tim has as T. Because Sue has twice as many marbles as Tim, she will have 2T marbles. We do not need a variable for Jim, because he has 15 marbles. Now, we can set up this equation:

    T + 2T + 15 = 63

    Now, we can solve for T. First, we subtract 15 from both sides.

    T + 2T = 48

    Next, we combine all the T terms.

    3T = 48

    Finally, we divide both sides to find how many marbles Tim has.

    T = 16

    So, Tim has 16 marbles.
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