Free Practice Question
PS · Problem Solving
505-555
Mixture
Alex earns an hourly wage, amounting to $500 for h hours of work in a week, where h > 0. If Alex's hourly wage is raised by 20% and he chooses to work 20% fewer hours each week, what will be Alex's weekly earnings?
Answer Choices
Correct answer marked belowA
$300
B
$450
$480
Correct
D
$500
E
$600
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Explanation
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Official Explanation
Official
To find Alex's new weekly earnings, we first calculate his new hourly wage after a 20% increase: $500 * 1.20 = $600. Next, we determine the number of hours he will work after a 20% reduction: h * 0.80.…
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S
ShivangiJan 25, 2025
thanks for posting
A
ArhanNov 19, 2024
thanks a lot
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