A father is 30 years older than his son, however he will be only thrice as old as the son after 5 years, what is the father's present age ? A. 40 yrs B. 30 yrs C. 50 yrs D. None of the above Ans. A

• 40 years
  After 5 years . if ages are F and S , then
  F=3S where F = S+30
  F= 3*(F-30) = 3F-90
  2F = 90
  F =45
  
  so present age = 45-5= 40 years
• 12 years agoHelpfull: Yes(4) No(1)
• A. 40yrs
  
  Let Son's age: x
  Father's age : x + 30
  
  In 5 years:
  Son's age: x + 5
  Father's age: x + 35
  
  In 5 years the father is thrice as old as his son so:
  3(x + 5) = x + 35
  x = 10
  
  Current father's age = x + 30 -->That is 40.
• 12 years agoHelpfull: Yes(3) No(3)
• A. 40yrs
  
  Let Son's present age = x
  then Father's present age = x + 30
  
  after 5 years
  Son's age = x + 5
  Father's age = x + 35
  
  As per condition given after 5 years the father will be thrice as old as the son so:
  x + 35 = 3(x + 5) => 2x = 20
  => x = 10
  So Son's present age = 10 years
  and Father's prsent age = x + 30 = 10 + 30 = 40 years,
  Hence Ans: A 40 years
• 12 years agoHelpfull: Yes(1) No(3)
• x=y+30
  x+5=3(y+5)
  y+35=3y+15
  2y=20, so y=10
  x=40 years
• 12 years agoHelpfull: Yes(1) No(0)
• In today's puzzle
  
  Sum of all the numbers formed by the integers 2,3,4,5,8 is ....
  
  It is not given whether digits can be repeated.
  
  whether there is any limit on number of digits in a number formed by these integers.
  
  Please clarify.
• 12 years agoHelpfull: Yes(0) No(1)