A) 6 years 3 months
B) 7 years 9 months
C) 8 years 3 months
D) 9 years 6 months
Correct Answer: B
Solution :
Let sum =x. Then, S.I. \[=2x\]and Time \[=\frac{31}{2}\]years. Rate \[=\left( \frac{100\times 2x}{x}\times \frac{2}{31} \right)%=\left( \frac{400}{31} \right)%\] Now sum == x, S.I. = x and Rate \[=\left( \frac{400}{31} \right)%\] \[\therefore \] Time \[=\left( \frac{100\times x}{x}\times \frac{31}{400} \right)\] years
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