A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?

A. 32 years B. 36 years

C. 40 years D. 48 years

• let the age be x
  2/5x=x (2/5 the age of son = mothers age)
  after 8 yrs
  2/5x+8=x+8/2
  4=x/10
  x=40.
  so option c.40
• 11 years agoHelpfull: Yes(4) No(2)
• Let the present age of the person = x .
  
  Then present age of the mother = 5x/2
  
  
  
  Given that , after 8 years, the person will be one-half of the age of his mother.
  
  => (x + 8) = (1/2)(5x/2 + 8)
  
  => 2x + 16 = 5x/2 + 8
  
  => x/2 = 8
  
  => x = 16
  
  
  
  Present age of the mother = 5x/2 = 5×16/2 = 40
• 10 years agoHelpfull: Yes(0) No(0)
• P=2/5(m)
  P+8=1/2(m+8)
  2(p+8)=m+8
  2(2/5(m)+8)=m+8
  4/5m+16=m+8
  m-4/5m=8
  m/5=8
  M=40
• 4 years agoHelpfull: Yes(0) No(0)