V. Observers stationed at two sections XX and YY, 500 ft a part on highway, record the arrival times of five vehicles (A, B, C, D, and E) as shown in the table below. If total time of observation at XX was 15 sec. Determine the following: (3 points) (a) The time mean speed (TMS) (b) The space mean speed (SMS) (c) The flow at section XX. Vehicle Section XX Section YY A To To+7.6 sec B To+3.4 sec To+9.9 sec C To+7.9 sec To+14.6 sec D To+12 sec To+20.4 sec E To+14.9 sec To+21.7 sec