Answer:5 vans 7 cars
Explanation:
c=cars v=vans
c+v= 12
c =( 12-v)
11v + 4(12-v) = 83
11v + 48-4v = 83
7v = 35
v= 5
c = 12-5 c = 7
7 cars x 4 students = 28 students
5 vans x 11 students = 55 students
55+28 = 83 students
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