Jeff spent $50 in gifts for his family. the first 2 items cost total of $15 and then he bought 2 more for a total of $20. how many additional gift did jeff buy ig their average cost was $10 each?

Answer~ 2 gifts

The total amount he spent was $50 so, that is not important to us at the moment.
If he bought 2 items for the total amount of $15 that means he has $35 left to spend on his family.
Next, he bought 2 more items that made the total $20, meaning they were $2.50 each, bringing our among of money to $20 left to spend.
If each gift is approximately $10 each then that means that he can buy 2 more gifts.In the end he has no money left.