Answer:
Step-by-step explanation:
answerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr =====8
5.6271428571 sorry but my explanation is a way i only can understand it sorry
Answer:

Step-by-step explanation:
Number of blue marbles = 8
Total number of marbles = 16+8+7+1=32

The answer to your question is 9.5