Free Practice Question
PS · Problem Solving
555-605
Work Rate Problems
An apprentice bricklayer requires twice the time a master bricklayer does to construct a specific wall. If they collaborate and complete the wall in 10 hours, how long would it take the apprentice bricklayer to finish the wall by himself?
Answer Choices
Correct answer marked belowA
12
B
15
C
20
30
Correct
E
40
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Explanation
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Official Explanation
Official
The apprentice bricklayer takes twice as long as the master bricklayer to build the wall, meaning 1 Master = 2 Apprentices. Therefore, 1 Master + 1…
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U
UdayDec 24, 2024
thankss
What this question tests
What it tests
Your ability to combine individual work rates, usually by working with the fraction of a job completed per unit of time.
Common trap
Adding the times instead of the rates, or forgetting to take the reciprocal when combining rates.
Details
Difficulty
555-605
Type
PS
Category