Answer:
y = 12/5x, 48 bracelets
Explanation:
If y is the number of bracelets she makes, and x is the number of hours, then the equation would be:
y = 12/5x
This is because if she makes 12 bracelets every 5 hours, then the number she makes every hour would be 12/5, or 2.4.
Now that we have our equation, we can simply substitute 20 into our x value to find the number she makes in that time. Hence:
y = 12/5(20)
y = 48 bracelets
Since 20 is a group of 5 (containing 4 5s) we can also check our answer by multiplying 12 by 4, which also gives 48.
Hope that helps!