An HR Manager has to go through a pile of resumes

An HR Manager has to go through a pile of resumes for an advertised vacancy. All the resumes were received through email. The Manager started by printing out 80% of all resumes. He went through 30% of the printed resumes in 2 days. On the 3rd morning, he sought help from a colleague in going through the resumes. Between themselves, they managed to read 60 resumes that day. By the end of the 3rd day, 108 printed resumes were still left unread. How many resumes did the firm receive? Assume that HR Managers read only the resumes that are printed out.

(A) 280
(B) 300
(C) 240
(D) 375
(E) 400

Source: Original Question