One way to I solve this is by listing all the ways it can be multiplied by:
72: 1*72, 2*36, 3*24, 4*18, 6*12, 8*9.
80: 1*80, 2*40, 4*20, 5*16, 8*10.
Group the factors that they have in common.
Which are 1, 2, 4, and 8.
After that, find the greatest common factor that they both share.
Answer: 8
Building a =665 building b=815
Answer:
21a-8
Step-by-step explanation:
Here is the equation:

30 divided by 50 equals 0.6.
We do this because 30 divided by 50 meams you get the miles per minute.
But there are 60 minutes in an hour, so we multiply 0.6 times 60. This comes out to