Hi Eli!
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We Know:
1 1/2 cups of flour.
3/4 cup of white sugar.
1/8 cup of brown sugar.
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Part A:
I can't use a number line answering this question but you can create one with the steps I tell you.
First find common denominators:
1 1/2 = 3/2 = 12/8
3/4 = 6/8
1/8
Create a number that goes from 0/8 to 12/8, which means put a number with 12, 1/8 plots on it. Then plot 12/8, 6/8, and 1/8 in order in the number line.
Find out the total number of cups used:
12/8 + 6/8 + 1/8 = 19/8
Simplify:
19/8 = 2 3/84
Part A Answer: There are 2 3/8 cups used all together.
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Part B:
Part B Answer: The 3 cup bowl would work perfectly.
Why: The reason you would want to choose the 3 cup bowl is because it fits all the ingredients perfectly, the 3 cup bowl is greater than the 2 3/8 cups they used. You can't use 2 cups because it is less than the total cups of ingredients. The 4 bowl you could use but it is too big.
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Hope This Helps :)