a train crosses a platform of 140 m in 15 sec , same train crosses another platform of length 250 m in 20 sec . then find the length of the train ?
length of the train be â € ˜ x â € ™ x + 140 / 15 = x + 250 / 20 4 x + 560 = 3 x + 750 x = 190 m answer : a
subtract(multiply(250, divide(15, divide(15, const_3))), multiply(140, divide(20, divide(15, const_3))))