By Jeff
- **Nov 1**, 02:00 AM

Math
If Sarah drove at 50 kmh during the first hour of her trip and at 80 kmh during the second and third hour, what was Sarah's average speed for the three-hour trip?
A. 65 kmh
B. 68 kmh
C. 70 kmh
D. 72 kmh
E. 75 kmh
Question Discussion & Explanation
Correct...

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By Jeff
- **Oct 31**, 02:00 AM

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By Jeff
- **Oct 30**, 02:00 AM

Math
Jack spends 20% of his monthly salary to pay the mortgage and a tenth of what remains to pay the insurance. If Jack has $2,700 left after these payments, what is his monthly salary?
A. $3,000
B. $3,420
C. $3,500
D. $3,750
E. $3,840
Question Discussion & Explanation
Correct Answer - D - (click...

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By Jeff
- **Oct 27**, 02:00 AM

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By Jeff
- **Oct 26**, 02:00 AM

Math
A pool can be filled in 4 hours and drained in 5 hours. The valve that fills the pool was opened at 1:00 pm and some time later the drain that empties the pool was also opened. If the pool was filled by 11:00 pm...

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By Jeff
- **Oct 25**, 02:00 AM

Math
The sum of first consecutive positive odd integers is . What is the sum of all odd integers between 13 and 39, inclusive?
A. 351
B. 364
C. 410
D. 424
E. 450
Question Discussion & Explanation
Correct Answer - B - (click and drag your mouse to...

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By Jeff
- **Oct 24**, 02:00 AM

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By Jeff
- **Oct 23**, 02:00 AM

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By Jeff
- **Oct 20**, 02:00 AM

Math
is what percent of ?
A. 60
B. 80
C. 300
D. 360
E. 400
Question Discussion & Explanation
Correct Answer - E - (click and drag your mouse to see the answer)
Verbal
The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air...

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By Jeff
- **Oct 19**, 02:00 AM

Math
If 8 apples and 10 oranges cost as much as 22 apples and 4 oranges, how much does a combination of 7 oranges and 3 apples cost?
(1) An orange costs $0.01 more than an apple
(2) The ratio of the price of an orange to the...

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