Answer:
Lee sold 60 magazines
Explanation:
1st week:
Lee sold = x magazines
Terrence sold
magazines (30% more)
2nd week:
Lee sold = 0 magazines
Terrence sold = 12 magazines
Total:
Lee sold = x + 0 = x magazines
Terrence sold = 1.3x + 12 magazines
If Terrance sold 50% more than Lee by the end of the second week, then
x - 100%
1.3x + 12 - 150% (50% more), then

Hence, Lee sold 60 magazines