Subject: mathqa
Question: we invested a total of $ 1,000 . we invested one part of the money at 3 % and the rest of the money at 4 % . the total investment with interest at the end of the year was $ 1 , 036.70 . how much money did we invest at 3 % ?
Option: 
A: $ 330
B: $ 390
C: $ 360
D: $ 300
Answer: A