Posted by Lou on .
Brian O'Reily earns twice as much each week as a tutor than he does pumping gas. His total weekly wages are $150 more than that of his younger sister. She earns one quarter as much as Brian does as a tutor. How much does Brian earn as a tutor?

Math 
Reiny,
identical post:
http://www.jiskha.com/display.cgi?id=1250732594