. Working independently, Tina can do a certain job in 12 hours. Working independently, Ann can do
the same job in 9 hours. If Tina Works independently at the job for 8 hours and then Ann works
independently, how many hours will it take Ann to complete the remainder of the jobs?
(A)2/3 (B)3/4 (C)1 (D)2 (E)3

• (E)3
  Work done by Tina in 1 hr=1/12
  Work done by Tina in 8 hr=1/12*8 which is 2/3
  
  Now,the remaining work is 1/3 which is completed by Ann in 1/3*9 which is 3hr..
  
• 12 years agoHelpfull: Yes(47) No(2)
• tina one hr work=1/12
  tina 8hrs work=8/12=2/3
  remaining work=1/3
  ann 1 hr work=1/9
  so ann takes 3 hrs to complete the remaining work...3 * (1/9)=1/3
• 13 years agoHelpfull: Yes(12) No(2)