Question

, b, c and d are four passengers who travel between lincoln street and park street by train every day. a, b, c and d travel by the trains which start from lincoln street at 8
a.m., 8:30
a.m., 9
a.m. and 9.30
a.m. respectively while going to park street and they return by trains which start from park street at 7 p.m., 7.30 p.m., 8 p.m. and 8.30 p.m. respectively. the speeds of the trains starting at different times are different. the speed of the trains starting at 8
a.m. and 8 p.m. are equal and higher than all other trains. the total time spent in the to and fro journey is the same for all four people. also the sum of the time taken for all journeys from lincoln street to park street is the same as that from park street to lincoln street.

Answer 1

which class question is this