Answer:
yes, Billy wrote the ratio correctly
Explanation:
To indicate that you're using a ratio, you can use the division sign ( / ), a colon ( : ), or the word to. For example, if you wanted to say, "For every five men at the party, there are three women," then you could use any of the three symbols to state this. Here's how we go about it :
5 men / 3 women
5 men : 3 women
5 men to 3 women