The Smith family has 13 children, all born exactly 2 years apart. How old will the second-youngest child be when the oldest child is five times the age of the youngest child?

Answer 1

ages then:
n, n-2, n-4, n-6, n-2(13-1)
so last kid is n-24

5*(n-24)=n
n=5*6=30
youngestg will be 30-2(12)=6