Rs 4000 is divided into two parts such that one part is put out at 3% and the other at 5%. If the annual interest earned from both the investments be Rs 144, find the first part.	Pick one
A) Rs 4000	B) Rs 2800	C) Rs 3800	D) Rs 3500	E) Rs 3100
Explanation :   Average rate = (144/4000)*100= 
<gadget id="calculator">(144/4000)*100</gadget>
<output>18/5 = around 3.6</output>
3.6   Ratio= 14:6 = 7:3   So, first part = (7/10)*4000= 
<gadget id="calculator">(7/10)*4000</gadget>
<output>2_800</output>
Rs 2800.   Answer : Rs 2800
<result>B</result>
Rs 4000 is divided into two parts such that one part is put out at 3% and the other at 5%. If the annual interest earned from both the investments be Rs 144, find the first part.