At 12:00 noon, a machine, operating at a fixed rate, starts processing a large set of identical items. At 1:45 p.m., the twenty-first item has just been processed, and 15 have not yet been processed. At what time will all 36 items be processed?

A. 2:25 pm
B. 3:00 pm
C. 3:27 pm
D. 4:13 pm
E. 5:15 pm



OA B

Source: Magoosh