Answer:
If it opens at 5:30, then it closes at 10:00 AM
If it opens at 6, then it closes at 10:30 AM
If it opens at 6:30, then it closes at 11:00 AM
If it opens at 7, then it closes at 11:30 AM
If it opens at 7:30, then it closes at 12:00 PM
After 12:00 PM, no one is going to have breakfast. So these are the only possibilities of the timing it will open. Either at 5:30, 6, 6:30, 7, or 7:30.
So we need to solve:

First is important to note that both terms on the left side of the equation have a common factor because they are both divided by y. Then:

Then:

So the solution is y=6. Then option A is correct and you need to write the 6 between the symbols { }.
So remember that percent means parts out of 100
60%=60/100=6/10
so every 10 throws she makes 6
how many 5 in 50?
50/10=5
answe ris 5
so 5 tens so therefor 5 sixes
5 times 6=30
answer is 30 throws
C=65
If its wrong I’m really sorry:(