Mia wants to purchase a pair of jeans. The first time she saw the jeans, they were priced at $36. When she goes back to make the purchase they are $28.80. What is the percent change in the cost of the Jeans?
a
A) 80%
B) 15%
C) 18%
D) 20%

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)