Answer:
p = 4n
p = 312 passengers
n = 19.5 cars
Explanation:
Let
n = number of cars
p = number of passengers
a. p = 4n
b. p = 4n
Find p if n = 78
p = 4 * 78
c. Find n if p = 78
78 = 4n
Divide both sides by 4
78 / 4 = 4n / 4
19.5 = n
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