A) 15 yr
B) 18 yr
C) 20 yr
D) 30 yr
Correct Answer: C
Solution :
If principal = Rs. x and rate = r% per annum, then \[\text{Rate=}\frac{\text{SI }\!\!\times\!\!\text{ 100}}{\text{Principal }\!\!\times\!\!\text{ Time}}=\frac{x\times 100}{x\times 100}=10%\] \[\therefore \]\[\text{Time=}\frac{\text{SI }\!\!\times\!\!\text{ 100}}{\text{Principal }\!\!\times\!\!\text{ Rate}}=\frac{2x\times 100}{x\times 10}=20\,\,\text{yr}\]You need to login to perform this action.
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