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A man can plough a field alone in 20 days. His wife can plough it in 25 days. When they plough the field with their son they can plough it in 5 days. How many days would the son take if he were to plough the field alone?
Correct Answer: (b)
Official keyThis question appeared in the KAS Prelims 2020 examination (GS-I). It is Question 72 out of 100 questions in this paper. Section: General Studies.
This question was part of the KAS Prelims 2020 (GS-I). The KAS Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all KAS Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.