Problem: in how many seconds will a train 100 meters long pass an oak tree , if the speed of the train is 36 km / hr ?
Rationale: "speed = 36 * 5 / 18 = 10 m / s time = 100 / 10 = 10 seconds the answer is c ."
annotated_formula: divide(100, multiply(const_0_2778, 36))