Answer:
81%.
Step-by-step explanation:
To find the average attendance, you will need to find the the total of the average attendance from all 10 days.
Since we know the average attendance of the first 4 meetings was 75%, we can simply assume that those 4 days had this attendance. For this, you can do:
4×75= 300.
Now, for the remaining 6 days, you will need to multiply 85% by the amount of days. 6×85= 510.
Now, to find the average, we will need to add these together:
300+510= 810...
Then divide the result from the total number days to find the AVERAGE:
810÷10= 81%.