An x ray with a wavelength of 0100 nm collides with an

Question

Problem: An x ray with a wavelength of 0.100 nm collides with an electron that is initially at rest. The X-Ray's final wavelength is 0.117 nm.

Part A: What is the final kinetic energy of the electron?

Ee = ____________keV

I am not able to get the correct answer for above problem please help me. Thanks.