Answer:
6 pairs of jeans for 119.75 means 1 pair of jeans is equal to 119.75/6= $19.96
7 pairs of jeans for $131.80 means that 1 pair of jeans is equal to 131.80/7= $18.83.
(Answers are rounded to the nearest hundredth.)
The better buy is 7 pairs of jeans for $131.80.