A company sells only pens and pencils. The revenue from pen sales in 2007 was up 5% from 2006, but the revenue from the pencil sales declined 13% over the same period. If overall revenue was down 1% from 2006 to 2007, what was the ratio of pencil revenues to pen revenues in 2006?
This question was from a MGMAT booklet i have and there was no 5 answer choices. I wasn't sure how to use the plug in method to answer this question, so I used algebra and got the right answer.
I did the following:
1.05x + 0.87y = 99
x+y = 100
we now have 2 equations.. we can find x and y.
However, this way took me like 3 minutes. Is there a faster way?
This question was from a MGMAT booklet i have and there was no 5 answer choices. I wasn't sure how to use the plug in method to answer this question, so I used algebra and got the right answer.
I did the following:
1.05x + 0.87y = 99
x+y = 100
we now have 2 equations.. we can find x and y.
However, this way took me like 3 minutes. Is there a faster way?
