Katie is selling lemonade for $1.50 per cup. she decides to put them on sale for $ 0.90. what percent discount did she give on her lemonade

The answer is 40%

Step by step explanation:

$.90/$1.50  = .60 or that 90 is 60% of the $1.50 price.

The discount is then a 40% discount

this excerpt is taken from the book “we shall not be moved : the women’s factory strike of 1909 “ and is written by joan dash. it is the story of the great strike when almost 30thousand women working in factories in america formed a union to fight unsafe working conditions, long working hours and miserable wages.

question: which best states the author’s purpose for including this information in the text?

answer: to challenge the reader’s ideas about a historical event