Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?7 hours 30 minutes8 hours8 hours 15 minutes8 hours 25 minutes
Question
Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?7 hours 30 minutes8 hours8 hours 15 minutes8 hours 25 minutes
Solution
First, we need to find out how many pages each person can type in one hour.
Ravi types 32 pages in 6 hours, so his typing speed is 32/6 = 5.33 pages per hour.
Kumar types 40 pages in 5 hours, so his typing speed is 40/5 = 8 pages per hour.
When they work together, their combined typing speed is 5.33 + 8 = 13.33 pages per hour.
To find out how long it will take them to type 110 pages together, we divide the total number of pages by their combined speed: 110/13.33 = 8.25 hours.
So, they will take approximately 8 hours and 15 minutes to type an assignment of 110 pages together. Therefore, the correct answer is 8 hours 15 minutes.
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