Problem: a student chose a number , multiplied it by 2 , then subtracted 180 from the result and got 104 . what was the number he chose ?
Rationale: "solution : let x be the number he chose , then 2 * x * 180 = 104 2 x = 284 x = 142 correct answer d"
annotated_formula: divide(add(104, 180), 2)