A writes 50 pages in 10 hours. A and B together writes 70 pages in 10 hours.In how many hours B can write 26 pages.

• In 1 hr A writes = 5 pgs
  (A+B) together in 1 hr writes = 7 pgs
  So, in 1 hr B will write = (7 - 5) = 2 pgs
  
  Again, for writing 2 pgs B takes = 1 hr.
  so for writing 26 pgs B will take = 13 hr.
• 9 years agoHelpfull: Yes(12) No(0)
• A can write 1 page in 1/5 hrs
  A+B can write 1 page in 1/7 hrs.
  then B can write 1 page in 1/7-1/5=2/35 hrs.
  therefore B can write 26 pages in 2/35 *26 hrs = 52/35hrs
  
• 9 years agoHelpfull: Yes(4) No(4)
• A writes 5 pages in 1h
  A+B writes 7 pages in 1h
  B will write 2 page in 1h //(7 - 5)
  so for writing 26 pages B will take 13h
• 9 years agoHelpfull: Yes(0) No(0)
• As A takes 10hr for 50 pages and a and b writes 70 pages in 10hrs therefore,
  b takes 70-50=20 pages
  in one hr b writes 2 pages 20/10=2
  therefore b writes 26 pages in 13 hrs as 26/2
  ans =13 hrs
• 5 years agoHelpfull: Yes(0) No(0)