. In a market 4 men are standing .The average age of the four before 2 years is 55, after some days one man is added and his age is 45. What is the average age of all?
a) 55 b)54.5 c)54.6 d)54.7

• The average age of the four men before 2years = 55,
  The sum of the ages of the four men before 2 years = 55*4=220,
  Now, the sum of the ages of the four men at present = 220+(2+2+2+2)=228,
  Then, the sum of the ages of 5 men = 228+45=273,
  Therefore the average of all = 273/5 = 54.6
• 14 years agoHelpfull: Yes(49) No(1)
• av age of 4 persons now is 57.
  Total age of 5 now is 57*4+45= 228+45= 273.
  
  av age of 5= 273/5= 54.6 yrs
• 14 years agoHelpfull: Yes(17) No(2)
• total age of 4 men is x
  total age of 4 men before 2 year=x-8
  avg age before 2 year=x-8/4=55
  x-8=220
  x=228
  now,one men added of 45 year
  so,avg age of 5 men =228+45/5=54.6year
• 12 years agoHelpfull: Yes(7) No(1)
• avg age of 4 men b4 2 years is (x-(4*2))/4=55,
  4*2 s used since it s 2 yrs back n 4 ppl r der
  hence x=228
  then when a man o age 45 s added avg will be (x+45)/5=y wkt x=228
  (228+45)/5=54.6
• 13 years agoHelpfull: Yes(1) No(0)
• ans is 54.6
• 14 years agoHelpfull: Yes(0) No(4)
• 2 year back their ages average is 55*4=220
  present age of all is 57*4=228
  another member is added then 228+45=273/5=54.6
• 8 years agoHelpfull: Yes(0) No(0)