conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: Marcus ordered 5 croissants at $3.00 apiece, 4 cinnamon rolls at $2.50 each, 3 mini quiches for $4.00 apiece and 13 blueberry muffins that were $1.00 apiece.  At check out, Marcus shows his loyalty card that gives him 10% off of his purchase.  What is Marcus' total bill?
conversations.from: assistant
conversations.value: 5 croissants cost $3.00 each so they cost 5*3 = $15.00
  4 cinnamon rolls cost $2.50 each so they cost 4*2.5 =$10.00
  3 mini quiches cost $4.00 each so they cost 3*4 = $12.00
  13 blueberry muffins cost $1.00 each so the cost 13*1 = $13.00
  All total, his pastries costs 15+10+12+13 = $50.00
  His has a 10% coupon for his $50.00 purchase so that saves him .10*50 = $5.00
  His total bill is $50 minus his discount of $5.00 so 50-5 = $45.00