Question 1078406

Two mechanics worked on a car. The first mechanic worked for 
15
 hours, and the second mechanic worked for 
5
 hours. Together they charged a total of 
$1550
. What was the rate charged per hour by each mechanic if the sum of the two rates was 
$160
 per hour?
<pre>Is the person who's supposedly helping a "student" really, really serious? When will + 410 plus ANOTHER POSITIVE number ever equal + 160? 
I don't know when something is going to be done about this person! I hope soon!