A) 4.6%
B) 4.8%
C) 5.0%
D) 5.2%
Correct Answer: B
Solution :
Let a person invest 4% of x. |
\[\therefore \]\[\frac{x\times 4}{100}=\frac{(45000-x)}{100}\times 6\Rightarrow 2x=450000\times 3-3x\] |
\[x=\frac{45000\times 3}{5}\]= Rs. 27000 |
and another part is Rs. 18000. |
Interest for 1st part in one year \[=\frac{27000\times 4}{100}\] |
= Rs. 1080 |
Similarly, interest for rest part in one year |
= Rs. 1080 |
\[\because \] Total interest = Rs. 2160 |
\[\therefore \] \[\frac{45000\times r}{100}=2160\] |
\[\Rightarrow \] \[r=\frac{216}{45}=4.8%\] |
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