conversations.from: human
conversations.value: At a shop in Japan, women's T-shirts are sold every 30 minutes for $18, and men's T-shirts are sold every 40 minutes for $15. This shop is open from 10 am until 10 pm. How much does the shop earn selling T-shirts per week?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: First, the shop is open 12 hours * 60 minutes = 720 minutes per day.
  So, 720 / 30 = 24 women's T-shirts sold per day.
  The shop earns 24 * $18 = $432 selling women's T-shirts per day.
  Similarly, 720 / 40 = 18 men's T-shirts are sold per day.
  The shop earns 18 * $15 = $270 selling men's T-shirts per day.
  The shop earns $432 + $270 = $702 per day selling T-shirts.
  The shop earns $702 * 7 = $4914 per week.