Age Riddle: How Old Are Ben And His Daughter Now?

Leave your answers to the riddle in the comment section below.


Ben is four times as old as his daughter.

In 20 years’ time Ben shall be twice as old as her.

How old are Ben and his daughter now?


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By the given information we can form 2 equations and hence find the respective ages.

Let Ben’s age be B &

his daughters age be D.

So from the information provided we can write;

B = 4 x D &


B + 20 = 2 x (D + 20)

Substituting B value in the second equation we get.

4D + 20 = 2D + 40

2D = 20

Therefore we get the value of D as;

D = 10

Putting this value in the first equation we get;

B = 4 x D = 4 x 10 = 40

So Ben’s age is 40

Answer is Ben’s age is 40 and his daughter’s age is 10.

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