9. Two sets of students are collecting traffic data at two sections A and B of a highway 200 m. apart. Observation at A shows that 5 vehicles passes that section at intervals of 8.18 sec, 9.09 sec, 10.23 sec, 11.68 sec, and 13.64 sec. respectively. If the speed of the vehicles were 83, 75, 68, 58 and 50 kph respectively. Compute the density of traffic in vehicles per km, the time mean speed in kph and space mean speed in kph

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