That looks like it could have come right out of a math book; and having it structured in such a manner makes the difficulty of the problem much lower for any one with some English reading comprehension problems. In fact its so simply stated that Wolfram Alpha has no problem with solving for x.

https://www.wolframalpha.com/input/?i=836.50+%3D+6.5+*+x+%2B...

Wolfram Alpha is awesome as long as you know how to properly define the question, and when it comes to "word" problems that is 90% of the work. So this new version of the SAT just makes me think they want to make it more challenging for people who have reading comprehension problems. And the test being in English doesn't do one bit to help with that; case in point all of the discussion here about how the questions could be interpreted.