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# GMAT: Math 24

124-128, pgs. 168-169. Created by Sal Khan.

## Want to join the conversation?

• i got it wrong using 0.08.
how do i know when to use 8 or 0.08?
• also the question as for total amount of investment. therefore, should we deduct the principle?
• for q.125 if u take p/q = 2/11... you are faced with a dilemma. the options of both d and e work in such a case. so is the answer d or e then?
• They aren't looking for a numerical answer here, so:
p/q<1 - with some maths we can get:
p<1*q = p<q
P<Q Which is essentially 1P>1Q or 1>q/p
• Okay, we know `p/q < 1`. But do we know that it's a positive number? Because otherwise, q could be -2, p could be 4. That's less than one, but `p > q`. (Problem 125, ) It just seems we need more info to conclude `p < q` from `p/q < 1`.