Hope this helps but I think the answer could be : 157+25m=50+60m
It's undefined, but I think you spelled it wrong.
A. Both triangles equal 50 and 10x5 is 50. Therefore, y=5.
Given:

To find:
The value of x.
Solution:
We know that, corresponding sides of similar triangles are proportional.
Since,
, therefore

On substituting the values from the figure, we get


On cross multiplication, we get




Therefore, the value of x is 4.