walker wrote:

x+y+(xy/100)=9.2

I like walker's solution. It makes sense.

We start out with 1000.

x = the % increase from 1993 to 1994, and y = the % increase from 1994 to 1995.

if you add x% + 7% that would be the increases of the base (on 1000) not counting the extra you get from y% time the increased number for the prior year.

Like if you had 10% increase from '93 to '94, that'd be 1100 total. Then the next year if you had a 20% increase, you'd have 220. But you could view this as

x% = 10% and y=20%, so x + y = 30%. That means you have 300 increase from '93 to '95, but you have to account for the y% of the increase to '94 numbers. This is (10 * 20) /100 * 1000, or 20 / 100 = .2 * 1000 = 20. So you have 320. This is the same as

10% increase '93 to '94 = 100 increase. '94 to '95 is 20% of the '94 number (1100) so an increase of 220. Total is 1320 produced in '95.

Very nice walker to see how that works. You're always on top of things like this. Kudos!

_________________

------------------------------------

J Allen Morris

**I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a$$.

Get the best GMAT Prep Resources with GMAT Club Premium Membership