can you please elaborate why? thanks so much!

very smooth answer. thanks so much!

div and primes question

this question comes from the GMAT practice test software from mba.com. good luck.

i think its actually E


If you consider (2), its clear t>0 implies INSUFF

Consider (1):

this implies the x/t = +2/3 or -2/3. INSUFF

Consider BOTH:

Note that x/t could be say 6/9 which reduces to 2/3. so we still dont know if y = 9 or 6. we just know x/y = 2/3.

5. Alices pay was the same each month, and she saved the same fraction of her pay each month for a year. The total amount she saved at the end of the year was 3 times the amount of the portion she did not save. If all the money she saved was from her take home pay, what fraction did she save each mo...

My answer is D. my interpretation of definition of [x] is that [x] is the closest integer <= x. (1) 5x+1 = 3 +2x you can solve for x. then you can find [x]. namely, that x = 1/2. so [x] = 0. note that you don't even need to solve for x explicitly. it's good enough you are able to find x because then...

It's a strange question, but I think A is the answer. Here's why: The setup of the question basically revolves around similar right triangles. Each person's shadow and height form a right triangle with the ray of the sun which shares the same angles. Therefore, you have J/10 = P/9, where J = John's ...

one huge fact that's useful here is that 1 is NOT prime.