There is a number that is 8 times the sum of its digits. What is this number?

• 72 is that number.
  
  7+2 = 9(Sum of digits)
  9*8 =72(8 times its sum of digits)
• 12 years agoHelpfull: Yes(2) No(3)
• 72
  
  if no is x(10)+y(1)
  
  then 10(x)+y=8(x+y)
  
  ie 2x=7y
  x=7y/2
  
  is x and y between 0 to 9 digits
  
  x=7 y=2 satisfies
  
  no is 72
• 12 years agoHelpfull: Yes(2) No(0)
• The number is 72
  number=8*(sum of the didgits of the no)
  therefore
  72=8*(7+2)=8*9=72
• 12 years agoHelpfull: Yes(0) No(3)
• 72
  7+2=9
  9*8=72
• 12 years agoHelpfull: Yes(0) No(2)