Answer:
The price of each launcher is $ 15 . 
Explanation:
Given as :
The total price of three water balloon launchers including shipping charges = $50 
The cost of the three shipping = $ 5
So, The price of water balloon launchers excluding shipping charges = $50-$5 = $ 45
Now, 
 ∵ The price of 3 balloon launcher = $45
∴, The price of 1 balloon launcher = 
 = $15
Hence The price of each launcher is $ 15 . Answer