Asweater was on sale at 40% off the regular price. ella saved $20 by buying the sweater on sale. what was the regular piece of the sweater

Let x be the regular price of the sweater
40% of x = $20
0.40x = 20
Divide both sides by 0.40: x = 80

The regular price of the sweater is $80

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)