4000 was divided into two parts such a way that when first part was invested at 3% and the second at 5%, the whole annual interest from both the investments is Rs.144, how much was put at 3%? Options.
A) 3377	B) 2678	C) 2800	D) 2786	E) 1981
(x*3*1)/100 + [(4000 - x)*5*1]/100 = 144   3x/100 + 200 – 5x/100 = 144   2x/100 = 56 è x = 2800'   Answer: 2800
<result>C</result>
4000 was divided into two parts such a way that when first part was invested at 3% and the second at 5%, the whole annual interest from both the investments is Rs.144, how much was put at 3%?