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Re:2009-07-02- Percentages (0 viewing) 
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TOPIC: Re:2009-07-02- Percentages
#2198
Huzefa (Moderator)
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2009-07-02- Percentages 8 Months, 1 Week ago Karma: 11  
6 pints of a 20 percent solution of alcohol in water are mixed with 4 pints of a 10 percent alcohol in water solution. The percentage alcohol in the new solution is

A. 16
B. 15
C. 14
D. 13
E. 12


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#2224
parag111 (User)
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Re:2009-07-02- Percentages 8 Months, 1 Week ago Karma: 0  
the answer is A
because 6 pints : 4 pints gets the ratio of 3:2
therefore total is 3*20% + 2*10%=80%
that is the value of 5 units
thus 1 unit=80/5=16%
 
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#2242
bhavin (User)
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Re:2009-07-02- Percentages 8 Months, 1 Week ago Karma: 25  
Perfect answer Parag !!

Correct Answer is 16 ...option A ..

Alternatively, one can also solve as 6*0.2 + 4*0.1 = 0.12 + 0.04 = 0.16 = 16 percent

Keep Posting !!
 
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#2611
Zirak (User)
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Re:2009-07-02- Percentages 7 Months, 3 Weeks ago Karma: 0  
The answer key is (A)
(6P*20%) + (4P*10%) / (6P+4P) = (120P% + 40P%) / (10P%) = (160P%) / (10P%) = 16%
 
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#2666
Kevin (User)
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Re:2009-07-02- Percentages 7 Months, 3 Weeks ago Karma: 0  
A:16
 
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#2851
chinmay (User)
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Re:2009-07-02- Percentages 7 Months, 2 Weeks ago Karma: 0  
A

- cinmay
 
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