Ok if I have a rectangle MNOP ~ rectangle STUV. what is the length of TU with a line over TU?

Question

First rectangle is MNOP with 10 on one side and 4 on anotherside.

Second rectangle is STUV. With one side marked X for unknown #. And one side says # 6.

Would x = 10? Or if not can you explain?

Answer 1

10/6 = 4/X
10x = 24
X = 2.4