Posted by Leah on .
Jan is on year younger than her brother Bill and on year older then her sister Sue. The sun of the three children ages is 57. How old is each child.k

Math 
PsyDAG,
Let x = Jan's age, then x+1 = Bill's and x1 = Sue's.
x + (x1) + (x+1) = 57
Solve for x.