Q. A sum of money becomes 77/50 of itself in 18/5 years when invested at simple interest. What is the rate (in percentage) of interest per annum?
A) 18
B) 20
C) 15
D) 12
✔ Correct Answer: 15
Exam Insight
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A) 18
B) 20
C) 15
D) 12
✔ Correct Answer: 15
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