Q: A certain sum of money becomes 7 times of itself in 10 years a rate of simple interest. In 20 years, how many times will she becomes herself at the same rate of simple interest? एक निश्चित राशि साधारण ब्याज की एक दर से 10 वर्षों में स्वयं की 7 गुना हो जाती है। 20 वर्षों में, साधारण ब्याज की समान दर से वह स्वयं की कितनी गुना हो जाएगी?
A.
12
B.
10
C.
13
D.
14
Correct Answer:
Option C -
Explanations:
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