Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Math & Sciences (https://www.askmehelpdesk.com/forumdisplay.php?f=402)
-   -   Free math help with word problems (https://www.askmehelpdesk.com/showthread.php?t=732693)

  • Feb 6, 2013, 06:38 PM
    nknoblock
    free math help with word problems
    the sum of three numbers is 247 the sum of the first and second exceeds the third by 95 the third integer is 85 less than the first find the 3 integers
  • Feb 6, 2013, 06:58 PM
    joshfella
    1st integer: x
    2nd : y
    3rd : z

    Sum of three integers:
    x + y + z = 247 (1)

    Sum of first 2 exceeds the 3rd by 95. In another word, sum of first two is larger than the 3rd by 95:

    (x+y) - z = 95 (2)

    Third is less than first 85:

    x = z + 85 (3)

    Take (1) minus (2)
    x + y + z = 247
    -
    x + y - z = 95
    ----------------------
    2z = 247 - 95 =??

    Then divided by 2 to get z

    Since you get z, plug into (3) to get x.
    When you get x and z, plug x and z either in (1) or (2) to get y.

  • All times are GMT -7. The time now is 06:33 AM.