Given:
3 2/5 boxes of party favors.
1 full box contains 15 bags
each bag has 3 favors in it.
7 extra party bags no in boxes.
3boxes * 15 bags/box= 45 bags
2/5 boxes * 15 bags/box = (2*15)/5 = 30/5 = 6 bags
Additional 7 extra party bags.
Total number of bags:
45 + 6 + 7 = 58 party bags.
Total number of favors, 3 favors per bag.
58 party bags * 3 favors/bag = 174 favors.