Problem: p has $ 63 more than what q and r together would have had if both b and c had 1 / 9 of what p has . how much does p have ?
Rationale: p = ( 2 / 9 ) * p + 63 ( 7 / 9 ) * p = 63 p = 81 the answer is e .
annotated_formula: divide(63, subtract(const_1, multiply(divide(1, 9), const_2)))