Search found 16 matches
Easiest approach is to try out with real numbers. Least element of S = Least element of T + 7 Lets say least element of T = 2 Lets say least element of S = 2 + 7 = 9 T = {2,4,6,8,10} and Avg of T = 6 S = {9,11,13,15,17,19,21,23,25,27} and Avg of T = 18 Avg (T) - Avg (S) = 18 - 6 = 12 Ans D Thanks a...
- by cpay3245
Fri May 10, 2013 10:56 pm- Forum: Problem Solving
- Topic: QANT Guide Q70
- Replies: 3
- Views: 1049
The Greatest Common Divisor between any two numbers cannot be greater than the greater number itself (if both numbers are same) For example, GCD of 4 and 4 cannot in any case be greater than the larger number itself that is 4. AND if two numbers are different, GCD will be less than the larger / lar...
- by cpay3245
Fri May 10, 2013 10:50 pm- Forum: Problem Solving
- Topic: QANT Guide Q98
- Replies: 6
- Views: 1687
- by cpay3245
Fri May 10, 2013 9:52 pm- Forum: Problem Solving
- Topic: Is there a shortcut QANT Guide 2nd Edition Q81
- Replies: 9
- Views: 3019
QANT Guide Q98
Which of the following CANNOT be the greatest common divisor of two positive integers x and y?
a) 1
b) x
c) y
d) x-y
e) x + y
- by cpay3245
Fri May 10, 2013 9:48 pm- Forum: Problem Solving
- Topic: QANT Guide Q98
- Replies: 6
- Views: 1687
QANT Guide Q70
Need help in getting to the answer on this one! List S consists of 10 consecutive ODD integers, and list T consists of 5 consecutive EVEN integers. If the least integer in S is 7 more than the least integer in T, how much greater is the average (arithmetic mean) of the integers in S than the average...
- by cpay3245
Fri May 10, 2013 9:46 pm- Forum: Problem Solving
- Topic: QANT Guide Q70
- Replies: 3
- Views: 1049
QANT Guide Q 68 - HELP!
When positive integer n is divided by 5, the remainder is 1. When n is divided by 7, the remainder is 3. What is the smallest positive integer k such that k+ n is a multiple of 35? a) 3 b) 4 c) 12 d) 32 e) 35 I do not know how to tackle this question and do not understand the logic in the answer exp...
- by cpay3245
Fri May 10, 2013 9:43 pm- Forum: Problem Solving
- Topic: QANT Guide Q 68 - HELP!
- Replies: 4
- Views: 1187
Is there a shortcut QANT Guide 2nd Edition Q81
Ada and Paul received their scores on three tests. On the first test, Ada's score was 10 points higher than Paul's score. On the second test, Ada's score was 4 points higher than Paul's score. If Paul's average (arithmetic mean) score on the three tests was 3 points higher than Ada's average score o...
- by cpay3245
Fri May 10, 2013 9:41 pm- Forum: Problem Solving
- Topic: Is there a shortcut QANT Guide 2nd Edition Q81
- Replies: 9
- Views: 3019
133 Qant Guide
If x cannot equal 2, the 3x^2(x-2) - x +2 / x-2 =
A. 3x^2 - x + 2
B. 3x^2 + 1
C. 3x^2
D. 3x^2 - 1
E 3x^2 - 2
- by cpay3245
Mon Apr 22, 2013 3:13 am- Forum: Problem Solving
- Topic: 133 Qant Guide
- Replies: 4
- Views: 1892
OG 172 - help?
For any positive integer n, the sum of the first N positive integers equals n(n+1)/2.
What is the sum of all the even integers between 99 and 301?
10100
20200
22650
40200
45150
- by cpay3245
Mon Apr 22, 2013 3:11 am- Forum: Problem Solving
- Topic: OG 172 - help?
- Replies: 1
- Views: 1158
- by cpay3245
Mon Apr 22, 2013 3:08 am- Forum: Problem Solving
- Topic: OG 199
- Replies: 3
- Views: 1472
That is fantastic Anju. I really appreciate you showing me a much simpler approach than the book. I just get really stuck tryng to work out how to answer questions like these and waste 5-10minutes on them...
Is there any special approach I should be adopting?
- by cpay3245
Fri Apr 19, 2013 10:39 pm- Forum: Problem Solving
- Topic: OG 137
- Replies: 4
- Views: 2320
OG 137
I am really struggling with these types of problems.... At his hourly rate, Don had estimated the labor cost of a repair job as $336 and was paid that amount. However, the job took 4 hours longer than he had estimated and, consequently, he earned $2.00 per hour less than his regular hourly rate. Wha...
- by cpay3245
Fri Apr 19, 2013 10:28 pm- Forum: Problem Solving
- Topic: OG 137
- Replies: 4
- Views: 2320
- by cpay3245
Thu Apr 18, 2013 9:24 pm- Forum: Problem Solving
- Topic: Stuck
- Replies: 1
- Views: 1219
- by cpay3245
Thu Apr 18, 2013 5:07 pm- Forum: Problem Solving
- Topic: OG 60 - Help
- Replies: 7
- Views: 2039
Hi thanks for your response:
I dont think the working you have done is correct.
He keeps the orange juice content the same but increases the water?
I am not sure how it is solved usig your method. You would end up with .6 (1/2)?
Which would equal .3???
- by cpay3245
Thu Apr 18, 2013 4:52 pm- Forum: Problem Solving
- Topic: OG 60 - Help
- Replies: 7
- Views: 2039