conversations.from: human
conversations.value: I'm stuck on this math problem: Mr. Callen bought 10 paintings at $40 each and 8 wooden toys at $20 each from the crafts store to resell at a profit. However, when he sold the items, the selling price of a painting was 10% less and the selling price of a hat 15% less. Calculate the total loss Mr. Callen made from the sale of the items.
  Can you help?
conversations.from: assistant
conversations.value: If he sold a painting at a 10% loss, then he made a 10/100*$40 = $4 loss on each painting.
  since he bought 10 paintings, the total loss he made from selling the paintings is 10*$4 = $40
  He also made a loss of 15/100*20 = $3 loss from selling each wooden toy.
  Since he bought 8 wooden toys, the total loss he made was 3*8 = $24
  In total, Mr. Callen made a loss of $40+$24 = $64 from the sales of the items.