A van travels a maximum of 100 km/h. Its speed decreases in proportion with the number of passengers. The van can carry a maximum of seven people. Given that the van can travel 88 km/h with 3 people in the van, what will be the speed of the van when 6 people are on board?
Answer
100—3t = 88
100—88 = 3t
t = 12/3
t = 4 km/h reduction in speed per person
When six persons are on board, the van travels at
100—6t = 100—6(4) = 76 km/h.
