Answer:
the base is 10 and the height is 6.4
<span>No, because postulates are assumptions. Some true, some not. So it can't be used to prove it</span>
Let's put it this way.
It's a ratio of 6:72 and we need to change it in a way to find number of rooms cleaned in 9 days.
Divide 6 & 72 both by 2
Ratio is now 3:36
Multiply 3 & 36 both by 3
Ratio is now 9:108
The number of rooms in which Robin can clean in 9 days is 108 rooms.