rahul played weel in this season.his current batting averagge is 51.if he score 78 runs in today match.his batting average will become 54.how many matches had he played in this season.
8
10
9
6
Ans????plzz

• 51x+78=54(x+1)
  =>3x=24
  =>x=8
• 10 years agoHelpfull: Yes(23) No(9)
• As Akanksha said we have to solve the equation we get 8 but total played will include current match also . so ans is 9.
• 10 years agoHelpfull: Yes(20) No(9)
• ans- 8
  as 51=sum of run/matches. (1)
  54= (sum+78)/matches+1 (2)
  on solving the 2 equations we get matches=8
• 10 years agoHelpfull: Yes(15) No(11)
• 9
  51=s/n
  54=s+78/n+1
  by solving we get n=8
  and including last match we get n+1=9
  
• 10 years agoHelpfull: Yes(15) No(6)
• 9 matches in this season.
• 10 years agoHelpfull: Yes(8) No(3)
• (51x+78)/x+1 =54
  
  X = 8. Ans = X+1=9.
  Final ans = 9
• 10 years agoHelpfull: Yes(8) No(4)
• Answer will be 8.
  Because the question says " his avg will become 54".
  So till now number of match in 8.
  
• 10 years agoHelpfull: Yes(7) No(6)
• let total match is x; than 51x+78/(x+1)=54
  that is x=8 ans
• 9 years agoHelpfull: Yes(3) No(0)
• avg=no of runs/no of matches
  (x/n)=51------------------- 1
  (x+78)/(n+1)=54------------------------2
  
  equalize 1 and 2 eqs
  
  x=51n
  
  sub in eq 2 ans is n=8.............
• 10 years agoHelpfull: Yes(2) No(1)
• batting avg =51
  If he scores 78..avg becomes 54.
  so..51x+78=54(x+1)
  3x=24
  x=8
  so..he has played 8 matches.
• 9 years agoHelpfull: Yes(0) No(0)
• if including today total match is x ;
  then,
  {78+(x-1)51}/x=54
  3x=27
  x=9
• 9 years agoHelpfull: Yes(0) No(0)
• let us assume that,he played x matches and scored 51 runs so no of matches=51x
  In next match if he scored 78 runs,the avg will be 54 so==(51x+78)/(x+1)=54
  x=8
  so nbr of matches are 9
  
• 8 years agoHelpfull: Yes(0) No(0)
• 51x+78=54(x+1)
  => 3x=24
  => x=8
  But we need to include the last match also in which he scored 78. so Answer is 9.
  
• 8 years agoHelpfull: Yes(0) No(0)
• X=51N ,X+78= 54(N+1)
  N=8
• 8 years agoHelpfull: Yes(0) No(0)
• ans =8
  x/n=51
  x+1/n+1=54
  n=8
• 8 years agoHelpfull: Yes(0) No(0)