conversations.from: human
conversations.value: I need a clearer understanding of how to solve: Jean needs to buy 10 new pairs of pants.  A store is running a sale for 20% off.  If the pants normally retail for $45 each how much will she need to pay for all of them after paying a 10% tax?
conversations.from: assistant
conversations.value: The discount is 45*.2=$9 off each pair
  So she pays 45-9= $36 each
  So it will cost 36*10=$360 before tax
  The tax will add 360*.1=$36
  So she has to pay 360+36=$396