Averages
47 CDS Mathematics previous year questions (PYQs) from 17 papers, 2016 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 19 easy · 24 moderate · 4 hard.
- Most-asked subtopics: Sum and Mean (20), Weighted and Combined Averages (19), Averages of Consecutive Numbers (8).
- Updated 20 September 2026.
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- Set · 2 questionsConsider the following for the next (05) items that follow : A, B, C, D, E, F and G are cousins. D is thrice as old as A. Further, C is as many years younger to B, as G to E and E to D. The average age of D and G is 16 years; the average age of A and E is 11 years; the average age of B and C is also 11 years. B and C have equal weight. A's weight is 10 kg less than that of B; D is 4 kg heavier than E; E is 4 kg heavier than F; F is 4 kg heavier than G. Further, D has age-weight ratio of 9 : 20, where age is in years and weight in kg; A has age-weight ratio of 2 : 5. Moreover, none of them is more than 40 kg.
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- Set · 1 questionConsider the following for the next ten (10) items that follow :
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