Solve within 10 minutes otherwise leave it.
Extracted text: A train of four wheel loads 30 kN, 10 kN, 20 kN and 40 kN (distance between each sequential wheel is 1 m) is passing in the given order leading with 30 kN, from right to left on a simply supported girder of 10 m span. Which of these wheel loads should be placed at the section 2m from the left side support, to produce Maximum Bending Moment at that section?