Search found 3 matches
DS - Machine X and Machine Y Rate Problem
Machine X and Y produced identical bottles at different constant rates. Machine X, operating alone for four hours, filled part of a production lot; then Machine Y, operating alone for three hours, finished the lot. How many hours would it have taken machine X operating alone to fill the entire produ...
- by TxGMAT
Sat Apr 15, 2017 3:50 pm- Forum: Data Sufficiency
- Topic: DS - Machine X and Machine Y Rate Problem
- Replies: 3
- Views: 2050
Distance Rate Problem - Help!
The time it took Car A to travel 400 miles was 2 hours less than the time it took Car B to travel the same distance. If Car A's average speed was 10 mph greater than that of Car B, what was Car B's average speed in miles/hr. A)20 B)30 C)40 D)50 E)60 I have a way to get to the answer I believe, but I...
- by TxGMAT
Sat Apr 15, 2017 2:53 pm- Forum: Problem Solving
- Topic: Distance Rate Problem - Help!
- Replies: 3
- Views: 1318
Sample of College Students
In a sample of college students, 40 percent are third-year students and 70 percent are NOT second-year students. What fraction of those students who are not third year students are second-year students? A) 3/4 B) 2/3 C) 4/7 D) 1/2 E) 3/7 I know that A through C are incorrect, but I can't get to the ...
- by TxGMAT
Sat Apr 15, 2017 2:15 pm- Forum: Problem Solving
- Topic: Sample of College Students
- Replies: 3
- Views: 1455