Hi! I can help you with that. 
Each package weighs 30 oz. So, if Paul buys 4 packages, he will be buying: 
30 oz x 4 = 120 oz 
To convert this into pounds, we need to divide the number of ounces by 16 (as there are 16 ounces in 1 pound). So, 
120 oz ÷ 16 = 7.5 pounds 
Therefore, Paul will be buying 7.5 pounds of hot dogs for his camping trip.