By Jeff
- **Nov 18**, 02:00 AM

Math
If there are 78 people working at an office, how many of them are women older than 40?
(1) There are twice as many men working at the office than women.
(2) The number of men and women under the age of 40 is the same.
Question Discussion...

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By Jeff
- **Nov 17**, 02:00 AM

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By Jeff
- **Nov 16**, 13:40 PM

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By Jeff
- **Nov 13**, 02:00 AM

Math
If 53 students are enrolled in both the CS103 (Algorithms and Data Structures) and the M101 (Mathematics for Computer Science) classes, how many of the CS103 students are not enrolled in M101?
(1) 72 students are taking M101.
(2) 59 students are taking CS103.
Question Discussion & Explanation
Correct...

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By Jeff
- **Nov 12**, 02:00 AM

Math
Machine A can do a certain job in 12 days working 2 full shifts while Machine B can do the same job in 15 days working 2 full shifts. If each day machine A is working during the first shift, machine B is working during...

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By Jeff
- **Nov 11**, 02:00 AM

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By Jeff
- **Nov 10**, 02:00 AM

Math
Buster leaves the trailer at noon and walks towards the studio at a constant rate of B miles per hour. 20 minutes later, Charlie leaves the same studio and walks towards the same trailer at a constant rate of C miles per hour along the...

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By Jeff
- **Nov 6**, 02:00 AM

Math
The population of a bacteria colony doubles every day. If it was started 9 days ago with 2 bacteria and each bacteria lives for 12 days, how large is the colony today?
A. 512
B. 768
C. 1024
D. 2048
E. 4096
Question Discussion & Explanation
Correct Answer - C - (click and...

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By Jeff
- **Nov 5**, 02:00 AM

Math
If , what is the value of ?
A. 101
B. 122
C. 157
D. 170
E. 197
Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)
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By Jeff
- **Nov 4**, 02:00 AM

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