Question 843439
 if subhash copies 50 pages in 10 hours 
then in 40 hours,
50 X 4 = 200 pages

subash and prakash  together can copy 300 pages in 40 hours

subash work in 40 hours = 300
then  prakash work  300-200 = 100 pages (in 40 hours)

it means 10 pages in 4 hours

so 30 PAGES IN 12 HOURS.....
HERE'S UR ANSWER.....

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