The ratio of managers to management trainees is 3 : 5. When 21 new management trainees are recruited the ratio will become 3 : 8. How many managers will be there in the group?

a) 27 b) 24 c) 21 d) Cannot be determined

• Option C 21
  Let the mangers and management trainees is 3x and 5x
  Now 3x/5x+21=3/8
  Solving this we get x=7
  Number of managers =3*7=21
• 12 years agoHelpfull: Yes(3) No(2)
• let manager=x,management tranier=y
  x/y=3/5...(1)
  now,x/(y+21)=3/8.....(2)
  by solving 2 equation we get x=21(ans)
• 9 years agoHelpfull: Yes(0) No(0)
• let the no.of managers and management trainess be 3x and 5x respectively.
  now as 21 maang.trainess are are recurtied so, th equation would be like this
  
  3x/5x+21 =3/8
  on solving we get x=7 .
  
  now managers would be 3*7=21.
  21 is d answer.
• 9 years agoHelpfull: Yes(0) No(0)