The answer is 1 and 3/4 because if you divide 21 by 12 you get 1.75 convert the decimal into a fraction and get 1 and 3/4. :)
She will need 1 3/4 cups of milk
Number of batches of pancake to be made = 3 batches
Number of cups of milk needed for each batch = 7/12
Therefore, in order to get the total number of cups of milk needed for the batches will be calculated thus:
= 7/12 × 3
= 21/12
= 1 9/12
= 1 3/4
Therefore, she will need 1 3/4 cups of milk.
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