Free Practice Question
PS · Problem Solving
505-555
Percentages
A farmer spent $35 on feed for chickens and goats. He spent 40% money on chicken feed, which he bought at a 20% discount off the full price, and spent the rest on goat feed, which he bought at full price. If the farmer had paid full price for both the chicken feed and the goat feed, what amount would he have spent on the chicken feed and goat feed combined?
Answer Choices
Correct answer marked belowA
$37.80
$38.50
Correct
C
$39.20
D
$39.50
E
$40.60
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Explanation
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Sign in to commentWhat this question tests
What it tests
Your ability to compute percentage change, percentage of a whole, and to work backwards from a final value.
Common trap
Treating successive percentage changes as additive — a 10% rise then a 10% fall is not back to the start.
Details
Difficulty
505-555
Type
PS
Category