Problem: a began business with rs . 27000 and was joined afterwards by b with rs . 54000 . when did b join if the profits at the end of the year were divided in the ratio of 2 : 1 ?
Rationale: 27 * 12 : 54 * x = 2 : 1 x = 3 12 - 3 = 9 answer : a
annotated_formula: subtract(multiply(const_4, const_3), divide(divide(multiply(27000, multiply(const_4, const_3)), 54000), 2))