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26 May, 13:13

Maria and Katy have string Maria's is 6 cm longer that Katy's. When they put both of the strings together the total is 84 How long is Maria's string and how long is Katy's sting

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  1. 26 May, 13:19
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    Maria's string is 45 cm long and Katy's string is 39 cm long

    Step-by-step explanation:

    Let's call the size of Maria's string X, and the size of Katy's string Y.

    So, using the information from the problem, we can formulate a system of equations:

    If Maria's string is 6 cm longer than Katy's, so:

    X = Y + 6

    If the strings together have 84 cm, so:

    X + Y = 84

    The first equation can be rewritten as X - Y = 6

    Summing up both equation, we have that:

    2X = 90

    X = 45

    Using X value in the first equation, we have that:

    45 = Y + 6

    Y = 39

    So, Maria's string is 45 cm long and Katy's string is 39 cm long
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