A man drops a ball downside from the roof of a tower of height 400 𝑚. At the same time another ball is thrown upside with a velocity 50 𝑚/𝑠. From the surface of the tower, then they will meet at which height from the surface of the tower

A man drops a ball downside from the roof of a tower of height 400 𝑚. At the same time another ball is thrown upside with a velocity 50 𝑚/𝑠. From the surface of the tower, then they will meet at which height from the surface of the tower

Question : A man drops a ball downside from the roof of a tower of height 400 𝑚. At the same time another ball is thrown upside with a velocity 50 𝑚/𝑠. From the surface of the tower, then they will meet at which height from the surface of the tower