Problem: kathleen can paint a room in 2 hours , and anthony can paint an identical room in 3 hours . how many hours would it take kathleen and anthony to paint both rooms if they work together at their respective rates ?
Rationale: "( 1 / 2 + 1 / 3 ) t = 2 t = 12 / 5 answer : c"
annotated_formula: multiply(divide(const_1, add(divide(const_1, 2), divide(const_1, 3))), 2)