Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Compound InterestModerate · 45s
The amount after 3 years at 10% p.a. (annual compounding) is ₹21,970.80. Find the principal.
TopicCompound Interest
Question Typemultiple choice
DifficultyModerate
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
P = 21970.80/(1.1)^3 = ₹16506.99.
Final Answer: Option A - ₹16506.99