Nathan owns a coffee kiosk. All of his employees work 8 hours per day. In 2009, he employed 5 people who produced a total of 900 cups of coffee each day. In 2010, he hired a sixth employee and production increased to 1188 cups of coffee each day. In Nathan's kiosk, productivity
A)decreased by 2 percent.
B)increased by 9 percent.
C)increased by 10 percent.
D)increased by 1.11 percent.

Question

Quizplus · Accepted Answer

From 2009 to 2010, the number of employees increased from 5 to 6 which is an increase of 20%. However, the total cups of coffee produced increased from 900 to 1188 which is an increase of 32%. Therefore, productivity increased by (32-20)/20 * 100 = 60/20 = 3/1 = 10%. Hence, the answer is choice C) increased by 10 percent.

Nathan Owns a Coffee Kiosk