A) 4 yr
B) 5 yr
C) \[6\frac{1}{4}\]yr
D) \[8\frac{2}{3}\]yr
Correct Answer: C
Solution :
Let the period of time be T year. Then, \[\frac{400\times 5\times T}{100}=\frac{500\times 4\times 6.25}{100}\] \[\Rightarrow \] \[T=\frac{500\times 4\times 6.25}{400\times 5}=\frac{25}{4}=6\frac{1}{4}\,\,\text{yr}\]You need to login to perform this action.
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