if 31x+29y+30z=366 then what is the value of x+y+z?

a)11 b)12 c)13 d)14

• Its a leap year equation!! so. in leap year there is 1 month of 29 days !!
  6 months of 31 days nd 5 month of 30 days !!! So, 6+5+1=12.....ans..
• 11 years agoHelpfull: Yes(30) No(6)
• i leap year 7 months of 31 days ,4 months of 30 days,1 month of 29 days
  31*7+29*1+30*4=366,so x+y+z=7+1+4=12
• 11 years agoHelpfull: Yes(15) No(1)
• 366days are leap year,its first form a type of months,let us take the month of 31 days,and then month of 30 days,finally already known on feb 28 days.
  step2:how many 31 days,30 days,28 days
  step3:add the all the months
  step: get the results
  process:
  31days=7months
  30days=4 months
  29days=1months
  let us calculate,
  (i) 31*7+30*4+29*1=366
  217+29+120=366
  366=366
  (ii)the value of x=7,y=1,z=4
  (iii)the answer is 7+1+4=12
• 11 years agoHelpfull: Yes(7) No(0)
• it's showing leap year data in which 7 months contain 31 days,1 contain 29 days and 4 months contain 30 days so correct ans. is 7+4+1=12
• 11 years agoHelpfull: Yes(4) No(0)
• i leap year 7 months of 31 days ,4 months of 30 days,1 month of 29 days
  31*7+29*1+30*4=366,so x+y+z=7+1+4=12
• 11 years agoHelpfull: Yes(3) No(1)
• Answer:12
  31,29,30 are days in year.There are 12 months in a year.Here x,y, z are no. of months in a year.
• 11 years agoHelpfull: Yes(2) No(1)
• this question is based on leap year....
  a leap year has 6 months of 31 days,1 month of 29 days and 5 months of 30 days...
  so 6+1+5=12
  
• 11 years agoHelpfull: Yes(2) No(0)
• I think the data is insufficient to find it . .
  
• 11 years agoHelpfull: Yes(0) No(7)
• Its a leap year equation!! so. in leap year there is 1 month of 29 days !!
  6 months of 31 days nd 5 month of 30 days !!! So, 6+5+1=12. So the answer is 12 for finding more such questions visit- http://blog.oureducation.in/bitsat-2013-sample-paper-for-aptitude-and-english/
• 11 years agoHelpfull: Yes(0) No(1)
• in a leap year there are 366 days and feb month has 29 days
  and 7 months have 31 days they are jan,mar,may,july,aug,oct
  and 4 months have 30 days they are apr,junt,sep,nov
  so the equ becomes 31*7+1*29+4*30=366
• 9 years agoHelpfull: Yes(0) No(0)
• 366 is considered as leap year which has 12 months so x+y+z=12
• 9 years agoHelpfull: Yes(0) No(0)