Weighted Average

[muktarashmi]

Page 97 Manhattan FDP series.
A company seels only pens and penciles.The revenue.........


So, How do I use the number line and solve... Its a 5% increase for pens and 13% decrease for pecils with overall decrease of 1%

I can get all these answers 4/12.....6/14.....6/12..lil confused how to solve this

[jnelson0612]

Since this is a question from the MGMAT strategy guide, please post to that forum: manhattan-gmat-math-strategy-guides-f7.html

Thanks!