Person1 can copy 40 pages in 10 hours .Person1 and Person2 together can copy 60 pages in 10 hours, how much time does Person2 takes to copy 26 pages?
Person1 can copy 4 pages in 1hr.(40/10)
Person1 and person2 can copy 60 pages in 10hrs.
thus, Person2 can copy 80 pages in 10 hrs.[eqn. is (40+x)/2=60, where x--> no. of pages Person2 can copy in 10 hrs.]
so, Person2 can copy 9 pages in 1hr.So to copy 26 pages Person 2 will need almost 3hrs.
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