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Math

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Maria is three times as old as her brother.In 4 years,Maria will be twice as old as he will be then.How old is Maria's brother now?

  • Math - ,

    Help need equation

  • Math - ,

    Let x = maria's age and y = her brother's.

    x = 3y

    (x+4) = 2(y+4)

    Substitute 3y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.

  • Math - ,

    6=24

  • Math - ,

    y=4
    x=12

  • Science - ,

    Lindana

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