SAT OG 第一版最后一道数学题. To cerebrate a colleague's graduation,the m coworkers in an office agreed to contribute equally to a catered lunch that costs a total of y dollars.If p of the coworkers fail to contribute,which of the following represents the additional amount,in dollars,that each of the remaining coworkers must contribute to pay for the lunch? (A) y/m (B) y/(m-p) (C) py/(m-p) (D) y(m-p)/m (E) py/m(m-p) 我选的B.