The number of widgets that a manufacturing plant can produce varies jointly as the number of workers and the time that they have worked. Find the constant of proportionality k to 2 decimal places if 315 workers work 11 hours and can produce 5855.85 widgets.
w = k(nt) , where n is the number of workers, and t is the number of hours,
w is the number of widgets
when n = 315, t = 11 and w = 5855.85 ( ?? partial widgets ??)
5855.85 = k(315*11)
k = 5855.85/3465 = 169
w = 169nt