4 years ago , paula was 4 times as old as karl . in 4 years , paula will be twice as old as karl . what is the sum of their ages now ?
"p - 4 = 4 ( k - 4 ) and so p = 4 k - 12 p + 4 = 2 ( k + 4 ) ( 4 k - 12 ) + 4 = 2 k + 8 k = 8 p = 20 p + k = 28 the answer is d ."
add(subtract(multiply(add(negate(subtract(4, multiply(4, const_2))), subtract(multiply(4, const_3.0), 4)), const_3), subtract(multiply(4, 4), 4)), add(negate(subtract(4, multiply(4, const_2))), subtract(multiply(4, 4), 4)))