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You are given the final selling point, $96/share. One share was sold at a 20% profit meaning $96=1.2*Original Price, so the the Original Price=96/1.2 (convert 1.2 to the fraction 6/5), OP=96/(6/5), OP=96*(5/6), OP = $80, which gives a profit of +$16. Share 2 is sold at a 20% loss indicating $96=.8*O...

by mwilliams

Thu May 15, 2008 6:42 pm
Forum: Problem Solving
Topic: GMAT Prep2 ?? (bobbystocks)
Replies: 3
Views: 1164

Utilize Pythagorean theorem to see that the left triangle is a 3-4-5 and that the right triangle is 5-12-13. This means that the middle triangle is a isosceles have 2 sides being 5 and 5. This means the angles opposite of the equivalent sides are also equal, meaning the bottom left angle that is 55 ...

by mwilliams

Thu May 15, 2008 6:34 pm
Forum: Problem Solving
Topic: GMAT prep2?? (Geometry)
Replies: 2
Views: 1041
by mwilliams

Thu May 15, 2008 6:28 pm
Forum: GMAT Verbal & Essays
Topic: Any audio study tools?
Replies: 4
Views: 10180
by mwilliams

Thu May 15, 2008 6:15 pm
Forum: Ask Stacy Blackman
Topic: MBA or MSA?
Replies: 9
Views: 25396
by mwilliams

Thu May 15, 2008 5:08 am
Forum: Data Sufficiency
Topic: Geometry Question II
Replies: 2
Views: 955

If n is a positive integer and r is the remainder when n^2-1 is divided by 8, what is the value of r? (1) n is odd (2) n is not divisible by 8 (1) plug in the numbers 3 and 5 for n, 3^2 - 1=8 so remainder is 0, use 5 to confirm 5^2 - 1=24, so remainder is 0 again (2)since odd numbers give you a rema...

by mwilliams

Wed May 14, 2008 9:15 pm
Forum: Data Sufficiency
Topic: GMAT Prep2 ?? Help...
Replies: 2
Views: 1067

(1) At the stand, 1 sandwich and 2 soft drinks cost a total of $3.15. (2) At the stand, 3 sandwiches and 1 soft drink cost a total of $5.70 s=sandwich and d=soft drink (1) s+2d=3.15, therefore s=3.15-2d (2) 3s+d=5.70 substitute 3.15-2d for s in equation 2 giving you 9.45-6d+d=5.70, then 3.75-5d=0, t...

by mwilliams

Wed May 14, 2008 8:29 pm
Forum: Data Sufficiency
Topic: GMAT Prep2 ?? (Sandwiches)
Replies: 2
Views: 1985

Is the positive integer j divisible by a greater number of different prime numbers than the positive integer k? (1) j is divisible by 30 (2) k = 1000 (1)plug in 30 for j, 30 is divisible by 2, 3, & 5 (2) 1000 is divisible by 2 & 5 therefore (1) & (2) together the are sufficient, but insufficient alone

by mwilliams

Wed May 14, 2008 6:29 pm
Forum: Data Sufficiency
Topic: GMAT Prep2?? (J Divisible)
Replies: 1
Views: 3760

(1) indicates b>a and c>b, therefore c>b>a
(2) indicates c>b and c>a, and since c=b+5 and c=a+8, substitute for c and you get b+5=a+8 then b=a+3, indicating b>a so again c>b>a

each answer by itself is sufficient

by mwilliams

Wed May 14, 2008 6:07 pm
Forum: Data Sufficiency
Topic: GMAT Prep2?? (b and c)
Replies: 1
Views: 1234
by mwilliams

Tue May 06, 2008 6:17 am
Forum: GMAT Strategy
Topic: The GMAT Life
Replies: 3
Views: 8314