To determine how many 1/4 cups are needed to make a 2/3 cup, you can perform a simple calculation. First, you need to find out how many 1/4 cups are there in 2/3 cups.
1/4 cup is equivalent to 2/8 cups because if you multiply both the numerator and the denominator by 2, you get 2/8.
Now, to convert 2/3 cup to 8ths of a cup, you can multiply both the numerator and the denominator by 2. This gives you:
2/3 cup = 4/8 cup
So, you need 4 of the 1/4 cup (which is equal to 2/8 cup) to make a 2/3 cup.