last year 80 students signed up for s summer trip to washington, D.C. This summer 50 students have signed up to go. What is the
percent decrease in the number of students?
1 answer:
You might be interested in
<em>Greetings from Brasil...</em>
isolating a:
(a + b + c)/3 = z
(a + b + c) = 3z
<h2>a = 3z - b - c</h2>
