Answer:
One sundae costs $4.5 while one ice cream cone cost $2.25
Step-by-step explanation:
Firstly, we append variables to the values of the cost of one sundae and one ice cream cone. Let the cost of one sundae be s and the cost of an ice cream cone be c.
We are told that 1 sundae doubles the cost of an ice cream cone. Mathematically :
S = 2C ............(I)
Then in one hour period, there was a sale of 26 ice cream cones and 8 sundae that cost $94.5. Mathematically:
26c + 8s = 94.5..........(ii)
Solving simultaneously, we insert i into ii
26c + 8(2c) = 94.5
26c + 16c = 94.5
42c = 94.5
c = 94.5/42 = $2.25
Since S = 2c
S = 2(2.25) = $4.5