the average temperature of june july and august was 31 degrees the average temperature of july august and september was 28 degrees if the temperature of june was 30 degrees find the temperature of september in degrees a)22 b) 19 c)20 d)21

• june+july+aug=31*3=93.....i
  july+aug+sep=28*3=84......ii
  i-ii
  june-sep=9
  given june=30
  so sep=21 ans
  
• 9 years agoHelpfull: Yes(10) No(0)
• 30+july+aug/3=31
  july+aug=63
  63+sep/3=28
  sep=21
  
• 8 years agoHelpfull: Yes(1) No(0)
• (30+july+aug)/3=31
  (july+aug+sep)/3=28
  july+aug=(31*3)-30=63
  sep=(28*3)-63=21
• 8 years agoHelpfull: Yes(1) No(0)
• june+july+aug/3=31
  june+july+aug=93,june=30
  july+aug=93-30=63
  july+aug+sept/3=28
  63+sept=84
  sept=21, option d)21
• 9 years agoHelpfull: Yes(0) No(0)
• total temp of june july and aug was 31*3=93
  total temp of july august and september was 28*3=84
  temp of june was 30 degree then total temp of july and august was 93-30=63
  
  so temp of september was 84-63=21
  ans z d)21
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• D) 21
  simple calculatio
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• june-sep=3(31-28)
  june-sep=3(3)
  30-sep=9
  30-9=sep
  21=sep
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• I agree with you rahul prasad
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• june+july+aug=31*3=93
  july+aug+sep=28*3=84
  june=30
  93-30=63
  63+x=84
  x=84-63
  x=21:answer
• 8 years agoHelpfull: Yes(0) No(0)
• (june+july+aug )/3=31; (july+aug+sep)/3=28;
  june+july+aug= 93 ; july+aug+sep= 84;
  july+aug= 93-30=63; 63+sep=84
  sep=84-63= 21 so,ans is:21
• 6 years agoHelpfull: Yes(0) No(0)