जॉइन Examsbookउत्तर : 3. "6.66 %"
An amount doubles itself in 15 years. what is the rate of interest ?5
प्र: An amount doubles itself in 15 years. what is the rate of interest ?
- 17.85 %false
- 29.41%false
- 36.66 %true
- 44.21 %false
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उत्तर : 3. "6.66 %"
व्याख्या :
Answer: C) 6.66 % Explanation: Let the principle be Rs. PAs the amount double itself the interest is Rs. P tooSo P = P x r x 15/100=> r = 100/15 = 20/3 % = 6.66 %.