A) Rs. 2200
B) Rs.1300
C) Rs. 2000
D) Rs.1800
Correct Answer: B
Solution :
Let amount invested at the rate of 4% be Rs. x and the amount at the rate of 5% be Rs. y. |
Annual interest at\[4%=\frac{x\times 4\times 1}{100}=\left[ \frac{4x}{100} \right]\] |
Amount interest at\[5%=\frac{y\times 5\times 1}{100}=\frac{5y}{100}\] |
So, \[\frac{4x}{100}+\frac{5y}{100}=153\Rightarrow 4x+5y=15300\] |
and \[x+y=3500\] (by condition) |
On solving, we get x = 2200 and y = 1300 |
Hence, amount invested at 5% = Rs. 1300 |
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