A store is selling a black pair of shoes for $79.45 and a brown pair of shoes for $133.99. the black pair of shoes is marked up
by 44%, and the brown pair of shoes is marked down by 21%. which pair of shoes is more expensive, and how much more expensive is it? round all dollar values to the nearest cent.
let: price after markup black shoes = x price after markdown brown shoes=y where a black pair of shoe price= $79.45 a brown pair of shoe price =133.99 solve for x and y x= $79.45 x(1+0.44) x=114.41 y=$133.99(1-0.21) y=$105.85 The black pair of shoes is more expensive than the brown pair of shoes. difference= x-y difference=$114.41-$105.85 difference =$8.56 The black pair of shoes is expensive by $8.56.
The commutative property of addition means we can add two integers in any order. So yes, It would still apply to two negative integers (for example, -2 + -3 and -3 + -2 both equal five)
