Answer:
here you go
Explanation:
no of times he failed = -3
points he losed = -3 x 4 = -12
no of times he need to hit the target to get 48 points = 6x
equation
-12 + 6x = 48
6x = 60
x = 10
no of points he will gain = 10 x 6 = 60
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