# Ages

Father is 36 years old, his daughter is 4 years old. Write down the ratio of the age of father and daughter. In what ratio will the ages of father and daughter after 4 years?

Correct result:

x =  9:1
y =  5:1

#### Solution:

$f=36 \ \\ d=4 \ \\ \ \\ x=\dfrac{ f }{ d }=\dfrac{ 36 }{ 4 }=9=9:1$
$y=\dfrac{ f+4 }{ d+4 }=\dfrac{ 36+4 }{ 4+4 }=5=5:1$

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