Free Practice Question
PS · Problem Solving
505-555
Mixture
To achieve a specific shade of gray, one needs to mix 2.5 liters of black paint for every liter of white paint. How many liters of white paint are necessary to blend with 400 liters of black paint to obtain this particular shade of gray?
Answer Choices
Correct answer marked below160
Correct
B
162
C
164
D
166
E
168
See the full step-by-step explanation
You can see the correct answer above. Sign in for free to unlock the complete worked solution.
Track your performance and improve
Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.
Explanation
Preview
Official Explanation
Official
To find the amount of white paint needed, we calculate: White paint…
Read the full explanation
Sign in for free to see the complete step-by-step solution to this question.
Comments
2
Sign in to join the discussion
B
BoniMar 29, 2024
Thank for sharing!
T
TejanApr 30, 2024
pls explain more?
What this question tests
What it tests
Your ability to reason about weighted averages and the composition of mixtures.
Common trap
Averaging the percentages of two solutions without weighting by their volumes.
Details
Difficulty
505-555
Type
PS
Category