a train 280 m long is running at 70 kmph . in how much time will it pass a platform 210 m long ?
distance travelled = 280 + 210 m = 490 m speed = 70 * 5 / 8 = 205 / 4 m time = 490 * 4 / 205 = 9.56 seconds answer : b .
divide(add(280, 210), multiply(const_60.0, const_0_2778))