algebra

what is the answer of the sum of a and b's age is 32; b and c's is 39; a and c's is 62. how old is c?

  1. 👍 0
  2. 👎 0
  3. 👁 43
asked by teresa
  1. a+b+0C=32
    0a+b+c=39
    a+0b+c=62

    subtract the second equation from the third.

    a-b=23

    add this and the first equation.
    2a=55
    a=55/2

    but a+c=62 ; c=62-55/2=34.5
    and finally, b=32-55/2=4.5

    It is not good practice to construct problems in which the age answers are fractions.

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    How old are they? I found this question online. Please help me understand where I may have made a mistake. Thanking you in advance. My question: Norman is now 4 times the age of her son, 3 years ago, the sum of their ages was 49.

    asked by Taywi4020 on April 19, 2015
  2. Word problem help plz

    The sum of the age of father and son is 99.if the age of the son is added to the inverted age of the father,the sum is 72.if the inverted age of the son is subtracted from the age of the father.the difference is 28...what are

    asked by Collins on January 4, 2016
  3. Math

    Sheila's age is two years more than twice Nicole's age. The sum of their ages is the same as Steven's age. If Steven's age is ten years less than five times Nicole's age, ,find the age of each. Write a verbal model!

    asked by jj on October 6, 2010
  4. Math

    When asked a question about age 17, Galixia replied "in three years y age will equal to the sum of my birthday year" what year did it take place answer chhoices a.1970 b.2000 c.1993 d/1990 Ps. Heres the answer (D) Explain please

    asked by Galixia on March 24, 2017
  5. math

    Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam. One year ago, Adam's age was twice the sum of Cynthia's and Fred's age. Find their present age. I have a answer already but I still not get it,please help

    asked by Thanh on September 20, 2010
  6. algebra

    the sum of the age of a girl and her brother is 26 year 3 years ago her age was 4 time the age of her brother. find their present age?

    asked by kiran on November 11, 2014
  7. math-ed 16

    The sum of the age of andy and his parents is 72.In how many years time will the sum of their age be 90?

    asked by rojj on June 11, 2017
  8. math

    if lynns age is 8 years less than 15 times the age of her neice Elizabeth, if the sum of their ages is 24, what is elizabeths age?

    asked by sharee on November 9, 2011
  9. Algebra

    Malcolm’s mother is 27 years older than he is and their ages are both two digit numbers. If Malcolm swaps the digits in his age he gets his mother’s age. a) How old is Malcolm if the sum o the digits in his age is 5? b) What

    asked by student #1 on August 18, 2019
  10. Math

    Needing help with the formula to be able to prove these answers to be correct. What are the steps ? Moesha's is ( 3G + 1 ) years old and Shanti is twice Moesha's age. A ) Find the sum of the ages of Moesha's and Shanti in2 years

    asked by Dee on December 6, 2017
  11. Algebra word problem.....so difficult

    Last three year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three years when i was two less than femi age now.the sum of kemi age in the next 9years and femi age noe and

    asked by Collins on October 19, 2015

More Similar Questions