Task: Question Answering
Input (English): Problem: john invests $ x at the semi - annual constant compounded rate of 2 percent and also does $ 15,000 at the quarterly constant compounded rate of 4 percent . if the interests are the same after 1 year , what is the value of x ? ? 
Options: a ) 20000 , b ) 30000 , c ) 40000 , d ) 30301.5 , e ) 50000
Output (English): d