Question

the average age of children in class 6 is 11 years and 2 months express the age in seconds​

Answer 1

Average age of Class 6 children: 11 years 2 months

So

11 years means 11 X 12 as we have to convert 11yrs into months that's = 132 months

132 + 2 as 2 is already in months = 134 months

1 minute = 60 seconds

134 months into 60 = 8040 seconds

Therefore 11yrs and 2 months in seconds = 8040 seconds