Rs 3200 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. Choose the correct option.
A) s 400	B) s 200	C) s 800	D) s 500	E) s 100
Explanation :   Average rate = (144/3200)*100= 
<gadget id="calculator">(144/3200)*100</gadget>
<output>9/2 = around 4.5</output>
4.5   Ratio= 5:15   So, first part = (5/20)*3200= 
<gadget id="calculator">(5/20)*3200</gadget>
<output>800</output>
Rs 800.   Answer :s 800
<result>C</result>
Rs 3200 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.