Answer:
<4 = 63°
Step-by-step explanation:
32° + 31° = < 4 ( exterior angle of a triangle is equal to the sum of two opposite interior angles)
<4 = 63°
Hope it will help :)
Finding what a number is diviseble by or finding multiples of a number
The ratio can be determined as,

Thus, the requried ratio is 7:12.
9/12 chose Friday or Saturday. That reduces to 3/4. Which is also 75%. Hope that helps.