a train leaves delhi at 7 a . m . at a speed of 30 kmph . another train leaves at 2 p . m . at a speed of 40 kmph on the same day and in the same direction . how far from delhi , will the two trains meet ?
"d = 30 * 7 = 210 rs = 40 – 30 = 10 t = 210 / 10 = 21 d = 40 * 21 = 840 km answer : b"
multiply(divide(multiply(30, add(const_3, 2)), subtract(40, 30)), 40)