Task: Question Answering
Input (English): Problem: x and y started a business by investing rs . 36000 and rs . 42000 respectively after 4 months z joined in the business with an investment of rs . 48000 , then find share of z in the profit of rs . 13970 ? 
Options: a ) 3200 , b ) 4064 , c ) 3250 , d ) 3825 , e ) 3985
Output (English): b