Questions about the world of GMAT Math from other sources and general math related questions.
kensetsu
 
 

The books error or mine?

by kensetsu Mon Apr 14, 2008 1:30 pm

Does anyone know if the explanation for question 10 in the Math: Eq, Ineq, VIC book is wrong? I noticed that in the second example it states that: (81)[9a + b/4 = x/9 = 9] translates into 729a + 20.25b + 9x = 9. Shouldn't it be 729a = 20.25b + 9x = 729? I'm sorry if this is a stupid question, but at this point I can't think straight right now. I worked too many hours this week.

Thanks
rfernandez
Course Students
 
Posts: 381
Joined: Fri Apr 07, 2006 8:25 am
 

by rfernandez Fri Apr 18, 2008 12:12 am

Yep, it's a typo. You are correct. Thanks for catching that. (Fortunately, you don't need to actually solve this system of equations!)

Rey