Data Sufficiency

Hi sapuna,

We're told that that a computer can be bought at a store for $P + 6% tax or bought from a catalog for $Q total. We're asked which price is bigger. This is essentially a YES/NO question....

Which is bigger, 1.06P or Q?

Fact 1: Q - P < 50

We can TEST Values:
Q = 50
P = 1
Q is bigger than 1.06P

Q = 1
P = 50
1.06P is bigger than Q
Fact 1 is INSUFFICIENT

Fact 2: Q = 1150

There's no information about P, so there's no way to know if Q or 1.06P is bigger.
Fact 2 is INSUFFICIENT

Combined, we know...
Q - P < 50
Q = 1150

This gives us.... 1150 - P < 50

1100 < P

Since P > 1100, 1.06P is > 1166
Q = 1150
We now have proof that 1.06P is ALWAYS greater than Q.
Combined, SUFFICIENT.

Final Answer: C

GMAT assassins aren't born, they're made,
Rich

Hi sapuna,

Everyone makes some silly mistakes at some point in their training. You can laugh about it now, but burn these memories into your brain. Too many silly mistakes will kill you on Test Day. Just a handful of silly mistakes, especially at the wrong point in a section, can throw your score off enough to keep you from 700+. Become militant about this process - lots of notes, proper organization, NO silly mistakes - and you'll hit your goal.

GMAT assassins aren't born, they're made,
Rich

sapuna wrote:Aye , easy question there mate. I multiplicated q instead of p there lol. The test I did is full of them silly mistakes.

Hi Sapuna,

If silly mistakes are hurting your score, then it's important that you identify and CATEGORIZE these mistakes so that, during tests, you can easily spot situations in which you're prone to making errors. I write about this and other strategies in the following article for BTG: https://www.beatthegmat.com/mba/2012/09/ ... n-the-gmat

Cheers,
Brent

Fair enough. Just be sure to watch for some commonalities in your errors. There may be a common thread that will allow you to spot potential error-prone situations in the future.

Cheers,
Brent