Verified by Ajay Kumar
At simple interest, a certain amount of money doubles in five years. What is the interest rate?
20%
25%
30%
40%
Answer: A
When money doubles, Simple Interest = Principal. Using \(R=\frac{SI\times100}{P\times T}\), we get \(R=\frac{100}{5}=20\%\) per annum.
साधारण ब्याज पर, एक निश्चित राशि पाँच वर्षों में दोगुनी हो जाती है। ब्याज दर क्या है?
20%
25%
30%
40%
उत्तर: A
राशि दोगुनी होने पर साधारण ब्याज = मूलधन। सूत्र \(R=\frac{SI\times100}{P\times T}\) से \(R=\frac{100}{5}=20\%\) वार्षिक।
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