James is four time as old as peter if their combined age is 30 how old is James.

Discussion in 'Calculator Requests' started by math_celebrity, Jun 14, 2019.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    James is four time as old as peter if their combined age is 30 how old is James.

    Let j be Jame's age. Let p be Peter's age. We're given:
    1. j = 4p
    2. j + p = 30
    Substitute (1) into (2)
    4p + p = 30

    Combine like terms:
    5p = 30

    Type 5p = 30 into our search engine, and we get p = 6.

    Plug p = 6 into equation (1) to get James's age, we get:
    j = 4(6)
    j = 24
     

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