conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: Nadia was sent to the flower shop to buy 20 roses and 3/4 times as many Lillies as roses. If roses cost $5 each and lilies cost twice as much each, calculate the total amount of money Nadia used to buy the flowers.
conversations.from: assistant
conversations.value: The total cost for roses is 20*5 = $100
  Nadia bought 3/4*20 = 15 lilies.
  Each lily costs 5*2 = $10
  She used 10*15 = $150 in total to buy lilies.
  To buy all the flowers, Nadia used 150+100 = $250