Find the GCF of 28 and 30

4

Step-by-step explanation:

The biggest number that you can divide 28 and 30 is 4.

Greatest common factor (GCF) of 28 and 30 is 2.

Step-by-step explanation:

You find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28 and 30.

85.3-64 = 21.3

so laura has already added 85.3 grams of chocolate powder and she has gone over the amount specified in the recipe by 21.3 grams

hope i ! have a great  day!