Answer:
It will cost $12.5 per person to charter a bus for 36 passengers
Step-by-step explanation:
The cost per person c of chartering a tour bus varies inversely as the number of passengers n.
We can write:
![c\:\alpha \:\frac{1}{n} \\c=\frac{k}{n}](https://tex.z-dn.net/?f=c%5C%3A%5Calpha%20%5C%3A%5Cfrac%7B1%7D%7Bn%7D%20%5C%5Cc%3D%5Cfrac%7Bk%7D%7Bn%7D)
where k is constant of proportionality
We are given when c = 22.50, n = 20
We need to find c when n = 36
First using c = 22.50, n = 20 we will find k, the constant of proportionality
![c=\frac{k}{n}\\22.50=\frac{k}{20}\\k=22.50 \times 20\\k=450](https://tex.z-dn.net/?f=c%3D%5Cfrac%7Bk%7D%7Bn%7D%5C%5C22.50%3D%5Cfrac%7Bk%7D%7B20%7D%5C%5Ck%3D22.50%20%5Ctimes%2020%5C%5Ck%3D450)
So, we get k = 450
Now, we will find c when n = 36
![c=\frac{k}{n}\\c=\frac{450}{36}\\c=12.5](https://tex.z-dn.net/?f=c%3D%5Cfrac%7Bk%7D%7Bn%7D%5C%5Cc%3D%5Cfrac%7B450%7D%7B36%7D%5C%5Cc%3D12.5)
So, we get the value of c: c = 12.5
Therefore, It will cost $12.5 per person to charter a bus for 36 passengers