To find out how much Mark spends on ground meat, we need to calculate the cost of the ground pork and the ground beef separately and then sum the two amounts.

1. Cost of ground pork: $\text{Cost of ground pork} = 1.5 \text{ pounds} \times \$4.30 \text{ per pound} = 1.5 \times 4.30 = \$6.45$

2. Cost of ground beef: $\text{Cost of ground beef} = 2.5 \text{ pounds} \times \$3.80 \text{ per pound} = 2.5 \times 3.80 = \$9.50$

3. Total cost: $\text{Total cost} = \$6.45 + \$9.50 = \$15.95$

So, Mark spends $15.95 in total on ground meat.

Would you like more details or have any other questions?

Here are 5 related questions you might find interesting:

1. What if Mark bought 3 pounds of ground pork instead? How much would he spend in total?
2. How much would Mark spend if the cost of ground beef increased to $4.00 per pound?
3. If Mark had a budget of $20, how much of each type of meat could he buy?
4. How would the total cost change if Mark bought twice as much ground beef but no pork?
5. What percentage of the total cost is spent on ground pork?

Tip: When solving problems with multiple items, calculate each part separately and then combine the totals for accuracy.