So bassically, when they say the word "to" in a ratio it means something to something right? So bassically, if it is boys to girls, we clearly know that there are 40 boys and 16 girls. So 40 boys to 16 girls, it would look like this
40:16. But thats not all! We can simplify this ratio. Think of it as a fraction that you are reducing to the minimum amount. The answers would be