Akshar and Manvita recently celebrated their silver wedding anniversary and their older son Sanju’s birthday. If the age of Sanju is 18 years after his parent’s marriage, and his age at their golden anniversary is in the ratio of 5: 21, how many years after their marriage was Sanju born?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 8 years.
Let the age of Sanju at their silver anniversary = x years
Sanju's age 7 years before silver anniversary = (x - 7) years
Sanju's age 25 years after silver anniversary = (x + 25) years
According to the question;
(x - 7) / (x + 25) =5 / 21
x = 17 years
Sanju's age on silver anniversary = x = 17 years
Sanju is born thus 8 years after marriage.