Sandra has $75 to spend on a new outfit. she finds a sweater that cost twice as much as the skirt. What is the most the skirt can cost?

Answer 1

Say the cost of the skirt is x

the cost of the sweater is twice the cost of the skirt, so it's 2x

the skirt plus the sweater has to be $75 or less

so

x + 2x <= 75

3x <= 75

divide both sides by 3

x <=25

so the skirt costs, at most, $25