Final answer:
To decide who got the better buy, we calculate the cost per sock for both Alain and Brittany. Alain's cost per sock is approximately $1.50, while Brittany's cost is approximately $1.35. Hence, Brittany had the better buy since her cost per sock is lower.
Step-by-step explanation:
To determine which was the better buy between Alain and Brittany's sock purchases, we need to calculate the cost per sock for both Alain and Brittany.
Alain bought a package of 6 socks for $8.99. The cost per sock for Alain is calculated as follows:
Cost per sock = Total cost / Number of socks
Cost per sock for Alain = $8.99 / 6
Cost per sock for Alain = $1.4983, approximately $1.50 per sock.
Brittany bought a package of 12 socks for $16.25. The cost per sock for Brittany is calculated as follows:
Cost per sock = Total cost / Number of socks
Cost per sock for Brittany = $16.25 / 12
Cost per sock for Brittany = $1.3542, approximately $1.35 per sock.
Since Brittany's cost per sock is lower than Alain's, Brittany got the better buy.