Please provide solution that would matchthe answer giving in theback of the book

Please provide solution that would matchthe answer giving in theback of the book. Question:Ball B is hanging from an inextensiblecord.An identical ball A is released from rest when it is justtouchingthe cord and drops through the vertical distance hA=200mmbeforestriking the ball B. Assuming perfectly elastic impact(e=1)and no friction determine the resulting maximumverticaldisplactment hB of ball B Answer: 96.0mm