The Youngest of the Tennis Player
Date: 9 May 1995 03:52:42 -0400 From: Dana Murray Subject: Question 3 Good Morning Sir ! Now for another tennis game: Five friends get together to play 5 doubles matches, with a different group of 4 players each time. The sums of the ages of the players for the different matches are 124, 128, 130, 136 and 142 years. What is the age of the youngest player ?
Date: 9 May 1995 11:00:44 -0400 From: Dr. Ethan Subject: Re: Question 3 Hey Dana, Here is what I will do. I will set the problem up but I will let you solve it. Let v,w,x,y,z represent the ages of the players. So we get five formulas: v+w+x+y = 124 v+w+x+z = 128 v+w+y+z = 130 v+x+y+z = 136 w+x+y+z = 142 So now we have five linear equations with five unknowns, and this can be solved -- and in this case there will only be one solution. Do you know how to solve these equations. If not, write back and we will give you the next step. Ethan Doctor On Call
Search the Dr. Math Library:
Ask Dr. MathTM
© 1994- The Math Forum at NCTM. All rights reserved.