Search found 11 matches
Rate #2
A spoke making machine can make x spokes in y minutes. How many spokes can z machines make in 50 minutes?
A. 50XZ / Y
B. 50X / YZ
C. 50Y / XZ
D. Y / 50XZ
E. 50XY / Z
- by AndreaV424
Tue Sep 08, 2009 11:41 am- Forum: Problem Solving
- Topic: Rate #2
- Replies: 1
- Views: 1098
Rates
Q: A policeman chases after a thief who has a 500m head start. They run at constant speeds, with the policeman running 1 km every 6 minutes and the thief 1 km every 10 minutes. How long will policeman take to catch up with the thief? A. 3 1/2 min B. 7 1/2 min C. 10 min D. 15 min E. 17 1/2 min 1. I k...
- by AndreaV424
Tue Sep 08, 2009 9:39 am- Forum: Problem Solving
- Topic: Rates
- Replies: 3
- Views: 1506
Problem Solving- Weighted Average
An instructor gives 3 initial exams and a final exam for a certain course. The average of the 3 initial exams was weighted 3.5 and the final exams is weighted 2/5. A student received initial exam grades of 72,73, and 80, and a final grade of x. If the students weighted average for the course was 79,...
- by AndreaV424
Sat Jul 18, 2009 3:56 pm- Forum: Problem Solving
- Topic: Problem Solving- Weighted Average
- Replies: 5
- Views: 3343
E ?
If m and n are both two-digit numbers, and m-n = 11X, is X an integer? (1) The tens digit and the units digit of m are the same (2) m+n is a multiple of X ------------------------ I'll take a try at this.. Statement 1 alone tells you that m can be 11, 22, 33, 44, 55,.. and so on, but it doesn't tell...
- by AndreaV424
Sat Jul 18, 2009 1:16 pm- Forum: Data Sufficiency
- Topic: m-n = 11X, is X an integer
- Replies: 5
- Views: 4409
#4.
#4.
lets say 100 students:
48 male
52 female
40% of male would be 19.2
20% of female woud be 10.4
Approximately 29 are 25 or older, meaning there are 71 people under 25.
71/100 = .71 (closest to .7)
- by AndreaV424
Fri Jul 17, 2009 3:43 pm- Forum: Problem Solving
- Topic: GMAT Prep 6 questions – I don't know how to solve them
- Replies: 20
- Views: 10702
my approach would be..
First, we want to figure out the total number of students. We know the ratio of students to teachers is 16:1. 16/1 = S/T T16= S And we know S + T = 510. Plug in T16 for S in the above equation: T16 + T = 510 which equals 17T = 510. So we find T = 30. Now we know there are 30 teachers and if (S= T16)...
- by AndreaV424
Fri Jul 17, 2009 1:35 pm- Forum: Problem Solving
- Topic: MGMAT practice test question
- Replies: 1
- Views: 2010
Thank you everyone!!
Thanks everyone for taking the time to response. Your input was very helpful! I took another look at the problem. I was able to solve down to 30/11. From here I calculated that 30/11 = 2.73. Then I thought, what is 73/100 of 60 seconds? 73/100 * 60 = 219/5 219/5 = 44 seconds ---------------------- I...
- by AndreaV424
Fri Jul 17, 2009 8:49 am- Forum: Problem Solving
- Topic: If 3 people work together, how long will the job take?
- Replies: 8
- Views: 4428
If 3 people work together, how long will the job take?
9. If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks? A. 2 minutes and 44 seconds B. 2 minutes and 58 seconds C. 3 minutes and 10 seconds D. 3 minutes...
- by AndreaV424
Thu Jul 16, 2009 6:23 pm- Forum: Problem Solving
- Topic: If 3 people work together, how long will the job take?
- Replies: 8
- Views: 4428
Algebra Problem- Confused by Equations
Can someone please help with the below problem? The correct answer is E; please clarify as well. I might not be reading is correctly. If E is correct, then that must mean that -4t = 32t = 8. I'm confused ?? Thank you!! ------------------------- Mary is reviewing her algebra quiz. She has determined ...
- by AndreaV424
Thu Jul 16, 2009 6:15 pm- Forum: Problem Solving
- Topic: Algebra Problem- Confused by Equations
- Replies: 1
- Views: 1119
Thanks Bara!
Hi Bara, Thank you very much for your advice! I completely agree with the classroom course. It was beneficial in the sense that it gave me a great first overview of the gmat material; however there came a point where every student was learning at different paces and different areas and I began to la...
- by AndreaV424
Sat Jul 11, 2009 12:15 pm- Forum: GMAT Strategy
- Topic: What are the best GMAT books?
- Replies: 3
- Views: 1525
What are the best GMAT books?
I recently took the Princeton Review Classroom course and found that I need extra time studying before taking the exam. I've already gone through Princeton Review books, but am interested in Kaplan. I've heard they are very helpful, different, and detailed. Should I get both the Kaplan Premier Packa...
- by AndreaV424
Fri Jul 10, 2009 5:03 pm- Forum: GMAT Strategy
- Topic: What are the best GMAT books?
- Replies: 3
- Views: 1525