conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: Billy is buying some candy with $10 his father gave him. The candy costs $1.5 a pound. After buying candy, he takes half his change and spends it on gumballs, which cost $.05 each. If he bought 40 gumballs, how many pounds of candy did he buy?
conversations.from: assistant
conversations.value: He spent $2 on gumballs because 40 x .05 = 2
  He had $4 in change because 2 / .5 = 4
  He spent $6 on candy because 10 - 4 = 6
  He bought 4 pounds of candy because 6 / 1.5 = 4