Answer:
[tex] \boxed{\frac{12}{1} = \frac{24}{2} = \frac{36}{3} = \frac{48}{4} = \frac{?}{5} = \frac{72}{6}}\\ [/tex]
Therefore, all the ratios are same i.e., 12
So, 12×5=60.
60 passengers can be transported in five vans.