Y=20x because if it travels 40 in 2 seconds that means in 1 second it traveled 20 so every second the elevator travels 20 so y is the total distance and X is the amount of seconds
The total 'parts' of the ratio is 10 (3+7). Complementary angles add to 90 degrees. Divide 90 by 10 and you get 9. Each 'part' is 9. 3:7 * 9 = 27:63 One angle is 27 degrees and the other is 63 degrees.