Problem: how long does a train 150 m long traveling at 60 kmph takes to cross a bridge of 170 m in length ?
Rationale: "d = 150 + 170 = 320 m s = 60 * 5 / 18 = 50 / 3 t = 320 * 3 / 50 = 19.2 sec answer : b"
annotated_formula: divide(add(150, 170), multiply(60, const_0_2778))