Raju and Akber take 4 hours and 6 hours to type 32 pages and 48 pages, respectively, on a computer. They are given an assignment of typing 256 pages. If they work together, typing on two different computers, starting at the same time, how much time will they take to complete the assignment (in hours)?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 16.
Raju's rate = 8 pages/hour, Akber's rate = 8 pages/hour.
Combined rate = 8 + 8 = 16 pages/hour.
Time to type 256 pages = 256 / 16 = 16 hours.