An internet recently hired 8 new network,in advertisement 20 network already employed.All new network cam from university A.In addition 75%of computer advertisement came from same university A.what fraction of original 20 network advertisement came from same university A?

• 8 new n/w,20 is already employed
  total n/w=20+8=28n/w
  so that 75% came from same university then 28*75/100=21
  we all know 8 n/w is recently hired then 21-8=13
  so that the fraction is=13/20
• 8 years agoHelpfull: Yes(35) No(0)
• Total network present in advertisement= (20 Old Network )+ (8 New network)
  =(15 from univ A + 5 from other univ) + (8 from univ A)
  so, Ratio of old network from univ A to new network from univ A = 15:23
  
• 8 years agoHelpfull: Yes(11) No(6)