Answer:
15
Step-by-step explanation:
since 3d is multiplying, it would be set up as 3*5=15
a. How many floors are between the seventh and fifteenth floors?
The easiest way to think about this is to give all of the numbers common denominators:
1 can be written as 6/6
0 can be written as 0/6
Now we can see that 5/6 is only 1/6 away from 1, while it is 5/6 away from 0.
So, 5/6 is closer to 1!
