a train speeds past a pole in 15 seconds and a platform 110 meters long in 25 seconds . what is the length of the train ?
"let the length of the train be x meters . the speed of the train is x / 15 . then , x + 110 = 25 * ( x / 15 ) 10 x = 1650 x = 165 meters the answer is e ."
multiply(110, subtract(const_2, const_1))