Respuesta :
Answer:
7:12
For every button in Package C, there are 5 buttons in Package D
1:5
Step-by-step explanation:
1. There are 35 buttons to 60 -> simplifies to 7:12 -> 7
2. 10 to 50 -> 1:5 -> 5 buttons
3. Same question as 1
4. Same question as 2
5. 35 to 35+60+10+50+20 -> 35: 175 -> 1:5 -> 1