At the supermarket, the price paid for oranges is proportional to the mass purchased. Annie paid $6 for 2 kg of oranges. How much will Annie pay for 12 kg of oranges? Let's answer step by step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The price of 1 kg of oranges is $6 / 2 kg = $3 / kg. So Ali will pay 12 kg * $3 / kg = $36 for 12 kg of oranges. The answer: 36.