From the present figure, we can conclude that the distance from W to Y must be equal the sum of the distance from W to X with the disctance from X to Y, because it is a straight line. From this, we can write a math relation as follows:
We know the distance from X to Y (XY) and from W to Y (WY). Substituting these values into the relation we have, we cansolve it as follows:
From the above solution, we conclude that the correct answer is the second option: 10.4 cm