Dinesh and Rakesh are working on an Assignment, Dinesh takes 6 hours to type 32 pages on a computer, while Rakesh takes 5 hours to type 40 pages. How much time will they take working together on different computers to type an assignment of 110 page ?
(a) 7 hrs, 30 min.
(b) 8 hrs
(c) 8 hrs, 15 min
(d) 8 hrs, 25 min