Search found 52 matches
15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 women do as much work as 2 men do? (A) 18 (B) 20 (C) 25 (D) 27 (E) 30 Total work = 15*21*8 men hours = 3/2*15*21*8 women hours Now with 6 hours and 21 women no of days = 2*15*21*4/6*21...
- by kvamsy
Thu Jan 28, 2010 2:13 am- Forum: Problem Solving
- Topic: 2 men do?
- Replies: 5
- Views: 1718
- by kvamsy
Mon Nov 16, 2009 1:35 am- Forum: Problem Solving
- Topic: Trains
- Replies: 11
- Views: 15213
Re: Trains
At 10 a.m. two trains started traveling toward each other from stations 287 miles apart. They passed each other at 1:30 p.m. the same day. If the average speed of the faster train exceeded the average speed of the slower train by 6 miles per hour, which of the following represents the speed of the ...
- by kvamsy
Fri Nov 13, 2009 12:08 am- Forum: Problem Solving
- Topic: Trains
- Replies: 11
- Views: 15213
First, I found how quickly two trains moving at the *same* speed could cover that ground: 287 miles / 3.5 hours = 82 miles per hour That means the trains are moving together at an average of 82 miles per hour. If they were moving at the same speed, that would mean they were each moving 82 / 2 = 41 ...
- by kvamsy
Thu Nov 12, 2009 6:30 am- Forum: Problem Solving
- Topic: Trains
- Replies: 11
- Views: 15213
Trains
At 10 a.m. two trains started traveling toward each other from stations 287 miles apart. They passed each other at 1:30 p.m. the same day. If the average speed of the faster train exceeded the average speed of the slower train by 6 miles per hour, which of the following represents the speed of the f...
- by kvamsy
Thu Nov 12, 2009 5:36 am- Forum: Problem Solving
- Topic: Trains
- Replies: 11
- Views: 15213
From my point of view simple way of solving this type ofquestions is to make a pictorial representation. - - - - - there are 5 total ways as a denominator, Coming to the numerator there is only one possibility for the given condition that is AA X BB , so answer could be 1/5 i guess. Please let me kn...
- by kvamsy
Mon Oct 26, 2009 11:05 am- Forum: Problem Solving
- Topic: probabilty
- Replies: 7
- Views: 1583
- by kvamsy
Wed Jul 22, 2009 11:17 am- Forum: Data Sufficiency
- Topic: Integer
- Replies: 4
- Views: 1330
- by kvamsy
Wed Jul 22, 2009 10:27 am- Forum: Data Sufficiency
- Topic: Integer
- Replies: 4
- Views: 1330
- by kvamsy
Wed Jul 22, 2009 10:26 am- Forum: Data Sufficiency
- Topic: Integer
- Replies: 4
- Views: 1330
Lets pretend that there are 6 students in the class. Half (3) got less than 70 and the other half(3) got more than 70. Ex. 1 Grades - 10, 25, 37, 71, 89, 99 avg=55 Ex. 2 Grades - 44, 44, 70, 75, 85, 88 avg=67 Can you see that we don`t know exactly what was the pattern of the grades? We only have th...
- by kvamsy
Wed Jul 22, 2009 10:19 am- Forum: Data Sufficiency
- Topic: Averages
- Replies: 4
- Views: 1233
You are right , but can you please explain in detailshibal wrote:IMO E, we have a variety of options between the numbers givenin both stmts....OA????
- by kvamsy
Wed Jul 22, 2009 10:04 am- Forum: Data Sufficiency
- Topic: Averages
- Replies: 4
- Views: 1233
Averages
Was 70 the average (arithmetic mean) grade on a class test? (1) On the test, half of the class had grades below 70 and half of the class had grades above 70. (2) The lowest grade on the test was 45 and the highest grade on the test was 95. -------------------------- Could anyone please explain the s...
- by kvamsy
Wed Jul 22, 2009 9:44 am- Forum: Data Sufficiency
- Topic: Averages
- Replies: 4
- Views: 1233
- by kvamsy
Tue Jul 14, 2009 3:32 am- Forum: Problem Solving
- Topic: equialteral triangel
- Replies: 9
- Views: 1724
- by kvamsy
Mon Jul 13, 2009 8:45 pm- Forum: Problem Solving
- Topic: equialteral triangel
- Replies: 9
- Views: 1724
Statement 1: 1) Substitute X = 1/2 gives us Y = + SQRT(10/3) , - SQRT (10/3) Which will tell us Y is not equal to 1 , Which is sufficient 2) Substitute X = 1/2 gives us Y = 1 ( exactly ) which is sufficient to answer Hence D be the answer in my point of view, Please let me know how it got B as answer
- by kvamsy
Wed Jul 08, 2009 1:04 am- Forum: Data Sufficiency
- Topic: is Y equal to 1
- Replies: 3
- Views: 3008