20 is the answer:
The shortest collection time in the after would be the minimum. This is 25.
The shortest collection time for before would also be the minimum. This is 45.
45 - 25 = 20
Answer:
7
Step-by-step explanation:
7 is the whole number and 1/3 is a fraction
1. angle 2
2. angle 6
3. angle 1
4. angle 7