# Equation word problem

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• December 7th 2006, 07:44 PM
Schatzle06
Equation word problem
If the sum of two numbers is 5 and their difference is 2, what is their product?

This problem is for extra points.
• December 7th 2006, 07:48 PM
ThePerfectHacker
Quote:

Originally Posted by Schatzle06
If the sum of two numbers is 5 and their difference is 2, what is their product?

This problem is for extra points.

We have,
$x+y=5$
$x-y=2$
Add,
$2x=7$
$x=3.5$

Substitute into first equation,
$3.5-y=2$
$y=1.5$
Thus,
$xy=(1.5)(3.5)$