Answer:
There are _18_ windows for every 3 penguins.
There are _6_ windows for every 1 penguin.
Explanation:
Since its is already given that 3 penguins = 18 windows, the first blank is 18
To get number of windows for 1 penguin, we divide 18 by 3, so:
![(18)/(3)=6](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7y8ff8fhldqzojeh2cxf6rxkk7b3p20rtl.png)
Hence, second blank is 6 windows for every 1 penguin.