Blue Book Questions

Praying4Luck
Fri, 04 Nov 2011 20:13:01 +0000

I’m proud to say I figured out a hard question without your help (lol!).

But I could not reason the second one…

To celebrate a colleague’s graduation, the m coworkers in an office agreed to contribute equally to a catered lunch that costs y dollars. If p of the coworkers fail to contribute, which of the following represents the additional cost in dollars that each of the remaining coworkers must contribute to pay for the lunch?

Answer: yp/m(m-p)

I realize that the cost that the remaining workers need to make up is yp, and that the remaining number of workers is m-p but why do I multiply the denominator by m?