conversations.from: human
conversations.value: This math problem has got me stumped: A pack of pretzels costs $4, while a pack of chips is 75% more expensive. Maciek went and bought two packets of chips and two packets of pretzels. How much did he pay for his purchases?
  Can you show me the way?
conversations.from: assistant
conversations.value: One pack of chips is 75/100 * 4 = $3 more expensive than a pack of pretzels.
  That means one pack of chips costs 4 + 3 = $7
  So Maciek paid 4 * 2 = $8 for the pretzels
  He also paid 7 * 2 = $14 for the chips.
  In total Maciek paid 8 + 14 = $22 for his purchases.