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

Math
grams of water were added to 80 grams of a strong solution of acid. If as a result, the concentration of acid in the solution became times of the initial concentration, what was the concentration of acid in the...

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

Math
Which of the following is closest to ?
A. 0.50
B. 0.89
C. 0.98
D. 1.02
E. 1.05
Question Discussion & Explanation
Correct Answer - C - (click and drag your mouse to see the answer)
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By Jeff
- **May 16**, 02:00 AM

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

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

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

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

Math
If among 20 students in a group, 5 study math, 10 study physics, and 6 study chemistry, are there any students who do not study any of the above-mentioned subjects?
(1) There are no students studying all of the three subjects.
(2) None of those who study...

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By Jeff
- **May 9**, 02:00 AM

Math
A right cylindrical tank with radius of the base 1 and height 2 is half full of water. If all the water is poured into another cylinder tank with height 1 and radius of the base 2, to what percent of its capacity will this...

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

Math
There are three lamps in a hall. If each lamp can be switched on and off independently, in how many ways can the hall be illuminated? (The hall is illuminated when at least one of the lamps is on.)
A. 5
B. 6
C. 7
D. 8
E. 9
Question Discussion...

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

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