# NIELIT 2016 DEC Scientist B - Section A: 48

741 views

The ratio of ages of the father and his son at present is $12 : 5$, the difference of their age is $28$ years. What will be the ratio of their ages after eight years ?

1. $2:2$
2. $3:1$
3. $2:1$
4. $3:2$

The present age of father and son at present is $12x$ years and $5x$ years respectively.

Now, $12x – 5x = 28$

$\implies 7x = 28$

$\implies x = 4$

$\therefore$ Father present age $= 12x = 48$ years and son present age $= 5x = 20$ years.

Now, the required ratio $= \dfrac{48+8}{20+8} = \dfrac{56}{28} = \dfrac{2}{1}$

Hence, the ratio of their ages after eight years $= 2:1.$

So, the correct answer is $(C).$

## Related questions

The ratio between Sumit's and Prakash's age at present is $2:3$. Sumit is $6$ years younger than Prakash. The ratio of Sumit's age to Prakash's age after six years will b...
The average of the husband and his wife age was $23$ years at the time of their marriage. After five years they have a one year old child. The average age of the family n...
The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a magazine. Study the pie-chart and answer the question based on it.$\... 0 votes 2 answers 4 1,026 views The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a magazine. Study the pie-chart and answer the question based on it.Va... 0 votes 2 answers 5 1,589 views The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a magazine. Study the pie-chart and answer the question based on it.$\...