Sponsored Ad:
Results 1 to 3 of 3

Thread: Determine Age

  1. #1
    Trying to make mom and pop proud akagboy's Avatar
    Join Date
    May 2005
    Posts
    15
    Rep Power
    16


    Good post? Yes | No

    Determine Age

    Sponsored Ad:
    Ann, Bob, Chris, Dana, and Eric are different ages such that their average age is 16. Bob is twice as old as Ann was three years ago. Eric is nine years younger than Bob. The sum of Chris and Ann's ages is equal to twice Dana's age. Dana is one year older than Ann. How old is Eric?

    A) 13

    B) 14

    C) 15

    D) 22

    E) 23


    Can some one help Solve this problem

    SPOILER: B

  2. #2
    Eager! txaggie's Avatar
    Join Date
    Mar 2005
    Posts
    54
    Rep Power
    16


    Good post? Yes | No

    Re: Determine Age

    I get A as the answer. Maybe..I maybe making a mistake in adding the numbers....so I will check and post my response.

  3. #3
    Trying to make mom and pop proud
    Join Date
    Feb 2005
    Posts
    6
    Rep Power
    16


    Good post? Yes | No

    Re: Determine Age

    I get A) 13

    sorry for the long winded solution:

    A = Ann
    B = Bob
    C = Chris
    D = Dana
    E = Eric

    (A+B+C+D+E)/5 = 16 , Therefore total age = 80

    B=2(A-3)
    E=B-9
    C+A = 2D
    D= A+1

    What is age of E?

    A + B + C + D + E = 80

    relate each age in terms of A:

    B = 2A - 6

    C+A = 2(A+1)
    C+A=2A+2
    C=A+2

    E = (2A-6) -9
    E = 2A-15

    A+B+C+D+E =
    A + (2A - 6) + (A+2) + (A+1) + (2A-15) = 80
    7A = 98
    A = 14

    If A = 14 Then B = 22 And E = 13


    Eric is 13 years old.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. s/t=2, determine value
    By ndcruz in forum GMAT Problem Solving
    Replies: 1
    Last Post: 04-01-2008, 02:12 PM
  2. how to determine NP-complete
    By ethanph in forum GRE Computer Science
    Replies: 11
    Last Post: 11-01-2007, 06:26 AM
  3. is it possible to determine?
    By ashraf Ali in forum GMAT Problem Solving
    Replies: 1
    Last Post: 09-05-2006, 05:24 PM
  4. Determine Occurance
    By Da_Gr8_Mperor in forum GMAT Problem Solving
    Replies: 9
    Last Post: 06-27-2006, 06:44 AM
  5. Can not determine why A is wrong?
    By silvergator in forum GMAT Sentence Correction
    Replies: 2
    Last Post: 02-20-2005, 01:22 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •