Arithmetic Aptitudes › Chain Rule › Question #5616
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QA group of worker promise to complete a piece of work in 10 days but 5 of them do not report for work if it took the remaining workers 12 days to complete the work then the number of workers original hired was?

ID: #5616 Chain Rule 184 views
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#5616Q ID
DifficultDifficulty
Chain RuleTopic
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  • A 15 ✔ ✖
  • B 25 ✔ ✖
  • C 30 ✔ ✖
  • D 45 ✔ ✖
Correct Answer: Option C

Explanation

Solution

Let the required number of workers originally hired be x.

less workers,more days(indirect proportion)

(x-5):x::10:12

12(x-5)=10x

2x=60

x=30

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