Lizzy: John buys 20 candy bars. His brother Dave pays for 6 of them. If each candy bar costs $1.50, how much did John pay?.
Me: Hmmm, let me think. I think this is the detailed solution:
User
He paid for 20 - 6 = 14 candy bars. So he paid 14 * 1.5 = $21. Final answer: 21.
Assistant