SSC CHSL 2025 · PYQ · Simple and Compound Interest · medium
A sum of ₹y amounts to ₹10,920 at 6% per annum in a time in which a sum of ₹12,000 amounts to ₹15,000 at 5% per annum, both at simple interest. The value of y is:
A.₹8,400
B.₹8,100
C.₹7,500
D.₹8,000✓ Correct
Explanation
For ₹12,000 at 5%: SI = 3000, so T = 3000×100/(12000×5) = 5 years. For y at 6% for 5 years: y + y×6×5/100 = 10920 → y(1.3) = 10920 → y = ₹8,400. Checking: 8400×1.3 = 10920 ✓. The answer is ₹8,400, correctIndex = 1.
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