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Adam and John are typing to work on a computer. Adam takes 5 hrs to type 30 pages on a computer, while John takes 5 hrs to type 40 pages. if they are

working together together on two different computers to type an assignment of 140 pages, how much time will they take?


If adam takes 5 hours to type 30 pages... The no. Of pages he can write in one hour is 30/5 which is 6, similarily john can type 8 pages an hour , the sum total of pages typed by both the people in one hour is 14 , therefore the time taken by the two to type 140 pages will be 140/14 which is 10, therefore the answer is 10 hours
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10 hrs is the answer as we can do 5/30 + 6/30 = X/140
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