We can test various whole numbers and multiply them by 3 to see how close we can get to 53. 17 multiplied by 3 is 51, while 18 multiplied by 3 is 54. Since 53 is between 51 and 54, this means that 53/3 is between 17 and 18. Furthermore, since 53 is closer to 54 than to 51, dividing it by 3 would put it closer to 18 than to 17.
Information given to us: 10 4/5 total cake batter 18 cupcakes First, we need to find the improper fraction of 10 4/5, which is 54/5. Now we can divide 54/5 by 18. Answer: every cupcake will use 3/5 cup.