Solved UPSC CDS/OTA Question
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Q · Average Medium · 45s
A batsman in his 16th innings makes a score of 60 and thereby increases his average by 3. What is his average after the 16th innings?
TopicAverage
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Let average after 16th innings = x,
and average after 15th innings = (x – 3)
∴ According to the question,
16x = 15(x – 3) + 60
⇒ 16x = 15x – 45 + 60
∴ x = 15
Final Answer: Option B - 20