
Kenneth S. answered 08/29/16
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
Main St site: raised x/2 + 50, where x is defined by
Back St site: raised x $
There is no mention of a third site, so we're forced to think that two of the car washed occurred at one of the sites (perhaps one morning shift, one afternoon shift).
So all we'll be able to say is that x + x/2 + 50 = 600. Just solve this equation for x. Hint: you can multiply all of these 4 terms by 2, eliminating the one denominator, and then it will be easier to combine like terms, etc.