Question

which situation can be modeled using this expression?
a. kim has 4 cups of flour. she uses \\(\frac{1}{4}\\) cup of flour for a recipe. how many cups of flour does kim have remaining?
b. alex has 4 pages to read for homework. so far, he has finished \\(\frac{1}{4}\\) of his homework. how many pages has alex read so far?
c. ben has a 4 - foot long sandwich. he cuts the sandwich into \\(\frac{1}{4}\\) - foot - long pieces. how many pieces of sandwich does ben have?
d. stacy has 4 hours to get ready for a concert. she spends \\(\frac{1}{4}\\) hour showering. how many hours does stacy have remaining to get ready?
enter answer here:

Explanation:

• For option A: The situation is about subtracting the used flour from the total, so it would involve \(4 - \frac{1}{4}\), not a multiplication - related expression.
• For option B: Alex has 4 pages to read and has finished \(\frac{1}{4}\) of his homework. To find the number of pages read, we calculate \(4\times\frac{1}{4}\), which is a common way to find a fraction of a whole.
• For option C: To find the number of pieces, we would divide the total length (4 feet) by the length of each piece (\(\frac{1}{4}\) foot), so the expression would be \(4\div\frac{1}{4}\), not a multiplication of 4 and \(\frac{1}{4}\).
• For option D: The situation is about subtracting the time spent showering from the total time, so it would be \(4-\frac{1}{4}\), not a multiplication - related expression.

Answer:

B. Alex has 4 pages to read for homework. So far, he has finished \(\frac{1}{4}\) of his homework. How many pages has Alex read so far?