SOLUTION: Johnny participates in a shooting competition where each shot cost 20C if you dont hit the target and if you hit the target you will get 30c.After 20 shots Johhny has a loss of 70c

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Question 1121403: Johnny participates in a shooting competition where each shot cost 20C if you dont hit the target and if you hit the target you will get 30c.After 20 shots Johhny has a loss of 70c.How many of the 20 shots di he hit on target?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
x misses
y hits


system%28x%2By=20%2C-20x%2B30y=-70%29
-
system%28x%2By=20%2C-2x%2B3y=-7%29

system%282x%2B2y=40%2C-2x%2B3y=-7%29

5y=33
This cannot possibly be right.
Look for any mistakes.

Answer by ikleyn(52817) About Me  (Show Source):
You can put this solution on YOUR website!
.
Wrong, incorrect and poorly formulated condition.

As it is formulated and presented in the post, the problem has no solution.