A) 14
B) 28
C) 21
D) 10
Correct Answer: C
Solution :
Case I, Interest = Principal Rate \[=\frac{\text{Interest }\!\!\times\!\!\text{ 100}}{\text{Principal}\,\text{ }\!\!\times\!\!\text{ Time}}=\frac{100}{7}%\] per annum Case II, Interest =\[3\times \] Principal Time \[=\frac{Interest\times 100}{Principal\times Rate}\] \[=\frac{3\times 100}{\frac{100}{7}}=3\times 7=21\] yearsYou need to login to perform this action.
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