Answer:
41
Step-by-step explanation:
The total number of people present (80) includes those that were wearing sunglasses (39) and those who were not (80-39 = 41). Since there were no people present wearing neither glasses nor suits, the number wearing suits but not glasses was 41.
19.5
165 divided by 8 is 19.5
the square root of 36 is 6, and for 64 it is 8
Use distributive property.
1/4
2/3 multiply top and bottom of fraction by 2
4/6 is the capacity of the container
1/6 is filled
so 1/4 of the container is filled