a train crosses a platform of 130 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 ‘ x ’ x + 130 / 15 = x + 250 / 20 20 x + 2600 = 15 x + 3750 5 x = 1150 x = 230 m answer : e"
subtract(multiply(250, divide(15, divide(15, const_3))), multiply(130, divide(20, divide(15, const_3))))