if 28a+30b+31c=365 then what is the value of a+b+c=?

• No of months in a year having 28 days=1
  No of months in a year having 30 days=4
  No of months in a year having 31 days=7
  
  so,28a+30b+31c=28*1+(30*4)+(31*7)=365
  
  Thus a+b+c=no of months in a year=12
  
• 9 years agoHelpfull: Yes(39) No(0)
• 28,30,31 are days of month
  count the num of months for given days
  28=1
  30=4
  31=7
  Total=12
  a=1
  b=4
  c=7
  a+b+c=12
• 9 years agoHelpfull: Yes(7) No(0)
• 28*1+30*4+31*7=365
  a+b+c=1+4+7=12
  12 ans.
• 9 years agoHelpfull: Yes(2) No(0)
• 12.. they constitute the number of days ina a year.. and a,b,c represents the months with their respective days
• 9 years agoHelpfull: Yes(2) No(0)
• a+b+c=12
  because in a year there are 7 months with 31 days,4 months with 30 days and February has 28 days.and a year has 365 days.and in a year there are 12 months.
• 9 years agoHelpfull: Yes(2) No(0)
• a+b+c=12 bcoz dese are months of days 28,30,31
• 9 years agoHelpfull: Yes(1) No(0)
• 28(1)+30(4)+31(7)=365
  =>1+4+7=12
• 9 years agoHelpfull: Yes(1) No(0)
• a+b+c=12
  a,b,c are numbers of months which contain 28,30,31 days in a non leap year
  (28*1)+(30*4)+(31*7)=365
• 9 years agoHelpfull: Yes(1) No(0)
• its the combination of years multiplied by days answer is 12
  
• 9 years agoHelpfull: Yes(1) No(0)
• 12..1+4+7=12
• 9 years agoHelpfull: Yes(1) No(0)
• 28*2 +30*1 + 31*9 is also 365 so (2+1+9=12) could also be a solution
• 9 years agoHelpfull: Yes(1) No(0)
• 12
  a=1,b=4,c=7
  a+b+c=12;
• 9 years agoHelpfull: Yes(1) No(0)
• No of months in a year having 28 days=1
  No of months in a year having 30 days=4
  No of months in a year having 31 days=7
  
  so,28a+30b+31c=28*1+(30*4)+(31*7)=365
  
  Thus a+b+c=no of months in a year=12
• 9 years agoHelpfull: Yes(1) No(0)
• 365 means 1 year
  in 1 year the no. months having 28 days is 1
  no. of months having 30 days are 6
  no. of months having 31 days are 5
  28(1)+30(6)+31(5)=365
  a=1 b=6 c=5 a+b+c=1+6+5=12
  
• 9 years agoHelpfull: Yes(1) No(0)
• it depends on the no of days in a month in non leap year, there are 1 28 day for feb and 4 30 days and 7 31 days so totally it is 12
• 9 years agoHelpfull: Yes(0) No(0)
• This are the month. 28*1(Feb) + 30 *4 (4 Months have 30 days) + 31*7 (Rest have 31 days) = 365
  so a+b+c = 1+4+7=12 month in a year
• 3 years agoHelpfull: Yes(0) No(0)