There is a tree between houses of A and B If the tree leans on A rsquo s House the tree top rests on...........

Quantitative Aptitude ( CCS) Height and Distance

There is a tree between houses of A and B. If the tree leans on A’s House, the tree top rests on his window which is 12 m from ground. If the tree leans on B’s House, the tree top rests on his window which is 9 m from ground. If the height of the tree is 15 m, what is distance between A’s and B’s house?