If I had one more sister I would have twice as many sisters as brothers. If I had one more brother I would have the same number of each. How many brothers and sisters have I?

• Ans= 3 sisters & 2 brothers
  If number of sisters=x, brothers=y
  x+1=2y, x-2y=-1 ---(i) &
  x=y+1, x-y = 1 ---(ii)
  Solving (i)&(ii), x=3,y=2
  
• 11 years agoHelpfull: Yes(21) No(1)
• Let the no. of brothers=x and no. of sisters=y;
  Now according to first condition, y+1=2x
  and the second condition will be, x+1=y
  now solve the two equation you will get, x=2 and y=3
  So no. of brothers=2 and no. of sisters=3.
• 11 years agoHelpfull: Yes(3) No(1)
• sis=x
  bro=y
  x+1=2y
  y+1=x
  solve both eqn
  and get
  x=2(sis)
  y=1(bro)
• 11 years agoHelpfull: Yes(2) No(4)
• sorry for my previous solution .solving 2 eqn we get y=2(bro) and x=3(sis)
• 11 years agoHelpfull: Yes(2) No(3)
• let no.of sis =x, no of bro =y.
  x+1=2y and y+1=x.solving these two eqn. x=3,y=2.
• 11 years agoHelpfull: Yes(1) No(1)
• if no of sister=x and no of brother=y then
  (x+1)=2y and (y+1)=x
  solving we get x=3 and y=2
• 11 years agoHelpfull: Yes(1) No(0)
• let the no of sisters and brothers are a and b respectively.
  now,
  1) a+1=2*b
  2) b+1=a
  solving two equations we get a=3, b=2.
• 11 years agoHelpfull: Yes(0) No(0)
• let x= no of sisters and y= no of brothers
  x+1=2y and y+1=x after solving these 2 eq x=3 and y=2
• 11 years agoHelpfull: Yes(0) No(0)
• 3 sisters , 2 brothers.
• 11 years agoHelpfull: Yes(0) No(0)
• 3 sisters 2 brothers
• 11 years agoHelpfull: Yes(0) No(0)
• let us consider sisters=3,brothers=2 case..
  if 1 sister is added it becomes 4...so now ratio is 2:4 which is 4:2
  so 2:1(sisters are twice of brothers)
  and if 1 brother is added it becomes 3..so now ratio is 3:3 which is 1:1
  conditions are satisfied..so sisters=3,brothers=2
• 11 years agoHelpfull: Yes(0) No(0)
• let no. of sisters=x nd brothers=y.
  now according to question, we get equations as-
  x+1=2y or x-2y=-1 ---(i)
  x= y+1 or x-y=1 ---(ii)
  solving we get x(sisters)=3 nd y(brothers)=2
• 11 years agoHelpfull: Yes(0) No(0)
• SISTER=3
  BROTHER=2
  
• 11 years agoHelpfull: Yes(0) No(0)
• LET X=NO, OF SIS;Y=NO.BRO.FROM FIRST PARA,X+1=2Y AND FROM SECOND Y+1=X, BY SOLVING FIND X,Y. SO X=3,Y=2.
• 11 years agoHelpfull: Yes(0) No(1)
• x+1=2y....(1)
  y+1=x.....(2)
  
  These two are the simultaneous equations formed.
  Equating, the values of x we get,
  2y-1=y+1...(3)
  
  we get, y=2
  
  Now, putting the value of y in Eqn(1):-
  we get X=3.
  
  2 brothers and 3 sisters.
• 11 years agoHelpfull: Yes(0) No(0)
• ANS. 5 and 7.
  plz check the both 5 and 7 or 2 and 3 in question not on the equation.
  you will get the correct one
  
• 11 years agoHelpfull: Yes(0) No(2)
• sister=x,broher=y
  x+1=2y,x-2y=1
  y=x+1,-x+y=1..so y=2 x=3 so sis=3 bro=2
• 11 years agoHelpfull: Yes(0) No(0)
• Two Brother's and three Sister's Ans.
• 11 years agoHelpfull: Yes(0) No(0)
• Let no. of brother=x & no. of sister =y
  from question,
  y+1=2x ---(i)
  x+1=y---(ii)
  solving these two equation
  we get, x=2
  y=3
  So total no. of brothers=2
  total no. of sisters=3
• 11 years agoHelpfull: Yes(0) No(1)