conversations.from: human
conversations.value: Can you explain how to solve this math problem: Mark is buying asphalt to pave a new section of road. The road will be 2000 feet long and 20 feet wide. Each truckload of asphalt will cover 800 square feet of road. If each truckload costs $75, and there's a 20% sales tax, how much will Mark need to pay for asphalt?
conversations.from: assistant
conversations.value: First, calculate how many square feet of road Mark needs to cover by multiplying the length by the width: 2000 feet * 20 feet = 40,000 sq ft
  Then divide the square footage of road by the number of square feet each truckload will cover: 40,000 sq ft / 800 sq ft/truckload = 50 truckloads
  Now multiply the number of truckloads by the cost per truckload: $75/truckload * 50 truckloads = $3750
  Now calculate the sales tax by multiplying $3750 by 20%: $3750 * .2 = $750
  Now add the sales tax to the cost of the asphalt to find the total: $750 + $3750 = $4500