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The average age of all the students in a class is 20 years. The average age of boys is 25 years while the average age of girls is 15 years. If the number of girls in the class is 10, then the number of boys in the class is:
Correct Answer: (c)
Official keyThis question appeared in the HPPSC Prelims 2021 examination (GS-II). It is Question 49 out of 200 questions in this paper.
This question was part of the HPPSC Prelims 2021 (GS-II). The HPPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all HPPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.