Solved UPSC CDS/OTA Question
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Q · Simple InterestDifficult · 45s
A person lent ₹4000 partly at 6% and partly at 8% simple interest per annum, earning ₹280 in a year. Find the amount lent at 6%.
TopicSimple Interest
Question Typemultiple choice
DifficultyDifficult
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Let ₹x at 6% and ₹(4000−x) at 8%.
0.06x + 0.08(4000−x) = 280 ⇒ x = 2000.
Final Answer: Option C - ₹2000.00