The girls group rented 2 canoes and 3 inner tubes for a total cost of $80. the boys group rented 1 canoe and 7 inner tubes for a total cost of $95. what is the cost to rent 1 canoe?
a. $18
b. $15
c. $25
d. $10
< 33

Let c is the cost of renting a canoe and t is the cost of renting inner tubes.

For the girls,
2c + 3t = 80
For the boys,
c + 7t = 95

Solving the system of equations, multiply the second equation by 2 and subtract them.

2c + 3t  = 80
2c + 14t = 190

     11t = 110
       t = 10

Substitute t to either equations,
c = 95 - 7t 
c = 95 - 7(10)
c = 25 

Therefore, one canoe costs $25 (C.)

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