Task: Question Answering
Input (English): Problem: 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 % ? 
Options: a ) $ 300 , b ) $ 330 , c ) $ 360 , d ) $ 390 , e ) $ 420
Output (English): b