conversations.from: human
conversations.value: Carla's order at Mcdonald's costs $7.50, but she has a coupon for $2.50. If she gets an additional 20% discount for being a senior citizen, how much does she pay for her order in dollars total?
  Find the solution.
conversations.from: assistant
conversations.value: First subtract the coupon amount from the price of the food: $7.50 - $2.50 = $5.00
  Then subtract 20% from 100% to find out what percentage of the reduced price Carla pays: 100% - 20% = 80%
  Now multiply the price after the coupon by the percentage Carla pays to find the final price: $5.00 * .8 = $4.00