Rs 3000 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 choice:	A) s 400	B) s 280	C) s 300	D) s 350	E) s 310

Rationale: explanation : average rate = ( 144 / 3000 ) * 100 = 4.8 ratio = 2 : 18 so , first part = ( 2 / 20 ) * 3000 = rs 300 . answer : c
Answer: C