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From the first triangle, \(x+y+90 = 180 => x+y = 90\)

From the second triangle, \((180 - b) + x + 10 + y + 5 = 180\) Since \(x + y = 90, 180 + 10 + 5 + 90 - b = 180 => b = 105\)

We have been asked to find the value of a(in terms of b and y) Since the sum of angles in a line is 180, \(a+y = 180\) Therefore \(a = 180 - y = 105 + 75 - y = b - y + 75\)(Option E) _________________

Given the first triangle is a right triangle, X and Y can be 45 and 45, or 30 and 60. Either way, plugging those values into the second triangle will net an answer that can be solved by (E).
_________________