# [SOLVED] Word Probelm Help!!!! Please!

• Mar 21st 2006, 06:39 PM
littlemissgothicsue
ok i really need this word problem help!

together fifi and maxx weigh 72 pounds,
Maxx and Sparky have a combined weight of 86 pounds
Lastly, the sum of Sparky's and Fifi's weights is 35 pounds

i dont understand how to set it up or how to solve it
i am suppose to use variables and complete sentences

thanks! ;)
• Mar 21st 2006, 08:42 PM
earboth
Quote:

Originally Posted by littlemissgothicsue
ok i really need this word problem help!

together fifi and maxx weigh 72 pounds,
Maxx and Sparky have a combined weight of 86 pounds
Lastly, the sum of Sparky's and Fifi's weights is 35 pounds

i dont understand how to set it up or how to solve it
i am suppose to use variables and complete sentences

thanks! ;)

Hello,

let m be the weight of Max;
let f be the weight of Fiffi;
let s be the weight of Sparky.

Now you can translate your sentences into equations:
1.: f+m =72
2.: m + s=86
3.: f + s=35

This is a system of linear equations and there are a lot of ways to solve it.

Never mind which one you use you should come up with this solution:
$\displaystyle f=\frac{21}{2},\ m=\frac{123}2},\ s=\frac{49}{2}$

Greetings

EB