Question: Caroline has 40 pairs of socks. She loses 4 pairs of socks at the laundromat. Of the remaining pairs of socks, she donates two-thirds to the thrift store. Then she purchases 10 new pairs of socks, and she receives 3 new pairs of socks as a gift from her dad. How many pairs of socks does Caroline have in total?
Answer: After losing some socks, Caroline has 40 - 4 = 36 pairs of socks. Caroline donates 36 * (2 / 3) = 24 pairs of socks to the thrift store. After donating some socks, Caroline has 36 - 24 = 12 pairs of socks remaining. After getting new socks, Caroline has 12 + 10 + 3 = 25 pairs of socks. The answer is 25.

Question: Ed and Jacob already had 2 shells in their shell collection. Then they went to the beach to collect even more. Ed found 7 limpet shells, 2 oyster shells, and 4 conch shells. Jacob found 2 more shells than Ed did. How many shells do the pair have altogether?
Answer: Ed found 7 shells + 2 shells + 4 shells = 13 shells at the beach. Jacob found 13 shells + 2 shells = 15 shells at the beach. In total Ed and Jacob have 2 shells + 13 shells + 15 shells = 30 shells. The answer is 30.

Question: Cassy packs 12 jars of jam in 10 boxes while she packs 10 jars of jam in 30 boxes. If she has 500 jars of jams, how many jars of jam will she have left when all the boxes are full?
Answer: Cassy can pack 12 x 10 = 120 jars of jam in the 10 boxes. She can also pack 10 x 30 = 300 jars of jam in the 30 boxes. A total of 300 + 120 = 420 jars of jam can be packed in the boxes. So, 500 - 420 = 80 jars of jam will be left unpacked. The answer is 80.

Question: Du Chin bakes 200 meat pies in a day. He sells them for $20 each and uses 3/5 of the sales to buy ingredients to make meat pies for sale on the next day. How much money does Du Chin remain with after setting aside the money for buying ingredients?
Answer:
From the 200 meat pies, Du Chin makes 200 * $20 = $4000 after the sales. The amount of money he uses to buy ingredients to make pies for sale on the next day is 3 / 5 * $4000 = $2400. After setting aside money for buying ingredients, Du Chin remains with $4000 - $2400 = $1600. The answer is 1600.