Answer:
The cost of one canteen is $7.5
Explanation:
We are given the following in the question:
Each brother purchase a new par of boots and two canteens.
Cost of one hiking boots = $34.00
Total cost of hiking boots =

Let x dollars be the cost of one canteen.
Number of canteens bought by both brother = 4
Total bill = $98.00
Thus, we can write the equation:

Solving the equation, we get,

Thus, the cost of one canteen is $7.5