Question 1090284
use matrix to solve:
A working couple earned a total of $4352.The wife earned $64per day;the husband earned $8 less per day. Find the number of days worked if the total number of days worked by both was 72
<pre>Shouldn't this be, "Find the number of days worked <b><u>by each person</b></u> if the total number of days worked by both was 72?"
It appears so, but why should I try to decipher your math problem?
Anyway, if so, your equations are: W + H = 72 and 64W + 56H = 4,352
You may need to determine how I came up with these 2 equations and then solve them using matrices. 
**Hint: One worked 40 days while the other worked ????? days. You figure out the rest.