The task is to generate the correct answer for a given math problem.

[Q]: Problem: the population of a bacteria culture doubles every 2 minutes . approximately how many minutes will it take for the population to grow from 1,000 to 300,000 bacteria
[A]: 16


[Q]: Problem: 12 . what is the dividend . divisor 17 , the quotient is 9 and the remainder is 10 .
[A]: 163


[Q]: Problem: if ( a + b ) = 12 , ( b + c ) = 9 and ( c + d ) = 3 , what is the value of ( a + d ) ?
[A]:
6 .