I’m pretty sure it’s the second one
If 2/3 is equal to 1 batch of muffins
than you need to multiply the fraction by 3 or 3/1
multiply the numerator by the numerator and the denominator by the denominator
2/3 *3/1 = 6/3 or simplified to...
2 cups of milk
It depends on what kind of pencil it is.
1/3 = 2/6, 5/6 - 2/6 = 3/6
The difference is 1/2 of a bottle(or 3/6)