Question 1078526

The difference in ages between a boy and his younger brother is 6years.the younger brother is6 years older than his sister.the sum of ages if the younger brother and his sister is 30.how old are the three children?
<pre>{{{highlight_green(matrix(3,4, Younger, "brother:", 18, years-old, Older, "brother:", 24, years-old, "Sister's", "age:", 12, years))}}}