Solved UPSC CDS/OTA Question
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Q · Simple InterestModerate · 45s
₹6400 amounts to ₹7120 in 1 year 6 months at simple interest. Find the rate per annum.
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 = ₹720; T=1.5; R = (720×100)/(6400×1.5) ≈ 7.50% ≈ 8%.
Final Answer: Option B - 8%