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03 Feb 2017, 08:10
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
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Question Stats:
81% (01:54) correct
19%
(02:19)
wrong
based on 285
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How many gallons of yellow paint must be added to a 20 gallons of green paint to create a paint that is 60% yellow if the green paint contains 20% yellow paint?
A. 4
B. 12
C. 16
D. 18
E. 20
A. 4
B. 12
C. 16
D. 18
E. 20
03 Feb 2017, 09:30
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Bunuel
How many gallons of yellow paint must be added to a 20 gallons of green paint to create a paint that is 60% yellow if the green paint contains 20% yellow paint?
A. 4
B. 12
C. 16
D. 18
E. 20
A. 4
B. 12
C. 16
D. 18
E. 20
20 gallons of green paint contains -
Yellow paint = 4 gallon
Green Paint = 16 gallon
Now we want to create a paint that is 60% yellow
So, \(\frac{4 + y}{20 + y} = \frac{6}{10}\)
Or, 40 + 10y = 120 + 6y
Or, 4y = 80
So, y = 20
Thus, we need to add only 20 Gallons of yellow paint, answer will be (E) 20
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