It's closer to 11%. 52/492 = 10.6%, with 492 being 150m in feet. Technically the 150m is the hypotenuse of the right triangle, and the "run" should be the flat leg of the triangle (tbh, I forget the term after all these years). But 10.6% calculation is close enough. Answer would be just a touch higher if done truly correctly.
It's closer to 11%. 52/492 = 10.6%, with 492 being 150m in feet. Technically the 150m is the hypotenuse of the right triangle, and the "run" should be the flat leg of the triangle (tbh, I forget the term after all these years). But 10.6% calculation is close enough. Answer would be just a touch higher if done truly correctly.
Never mind, it's 42/492, not 52/492. So close to 8.5% as you said. Dumb error on my part. Like I said, it's probably more like 8.6% if we had the real "run".