Q. 16.     Present age of father is 42 years and that of his son is 14 years. Find the ratio of

               (a) Present age of father to the present age of son.

               (b) Age of the father to the age of son, when son was 12 years old.

               (c) Age of father after 10 years to the age of son after 10 years.

               (d) Age of father to the age of son when father was 30 years old.

Answers (1)

Given, Present age of father = 42years and that of his son =  14 years.

The ratio of

               (a) Present age of father to the present age of the son:

                              =\frac{42}{14}=\frac{3}{1}=3:1

                 

               (b) Age of the father to the age of the son, when the son was 12 years old: 

                             =\frac{42-2}{14-2}=\frac{40}{12}=\frac{10}{3}=10:3

               (c) Age of father after 10  years to the age of son after 10 years:

                                =\frac{42+10}{14+10}=\frac{52}{24}=\frac{13}{6}=13:6.                                   

               (d) Age of father to the age of son when father was 30  years old.

                                  =\frac{42-12}{14-12}=\frac{30}{2}=\frac{15}{1}=15:1

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