(A) 23 hrs 24 min
(B) 27 hrs 43 min
(C) 28 hrs 32 min
(D) 25 hrs 42 min
Correct Option is: D
Number of pages typed by Adam=108
Number of pages typed by Adam in 1 hour = 108/18=6
Number of pages typed by Smith =120
Number of pages typed by Smith in 1 hour = 120/15 =8
Number of pages typed by both in 1 hour = (6 + 8) = 14
Time taken by both to type 360 pages,
= (360 * 1/14) =25 hrs 42 min