sandy wrote:

Quantity A: y
Quantity B: 4x
First find the value of x.
The lower triangle has 3 angles: x, 2x, 90
So, we know that x + 2x + 90 = 180
Simplify: 3x + 90 = 180
Simplify: 3x = 90
Solve: x =
30This means the angle opposite x is also 30 degrees.
So, we know 2 of the 3 angles in the top triangle. They are 30 and 90 degrees.
30 + 90 = 120, so the 3rd angle in the top triangle = 60 degrees.
Since angles on a line add to 180 degrees, we know that y =
120 degrees
We get:
Quantity A: y =
120Quantity B: 4x = (4)(
30) = 120
Answer:
Cheers,
Brent