Answer:
32 points
Explanation:
Set up an equation based on the given information
He started with 30 points: 30
Gained 'p' points: p
Lost 12 points: -12
Now he has 50 points: 50
So his point total can be described by the equation..
30 + p - 12 = 50
Now solve for p
p + 18 = 50
p = 32