Solved UPSC CDS/OTA Question
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Q · Simple InterestModerate · 45s
A sum amounts to ₹9800 in 5 years at simple interest. If the principal is ₹8000, find the rate of interest.
TopicSimple 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.
SI = ₹1800; R = (1800×100)/(8000×5) = 4.5%.
Final Answer: Option A — 4.5%