A student solved this problem and said the answer is 2 3/8  cups.

Mariana wanted to make some bread. The recipe called for 4 3 /4  cups of flour. She only had 2 3/8  cups of flour. How much more flour does Mariana need?

Is the student's answer reasonable?


Yes, the answer is reasonable.


No, the answer is not reasonable. It should be a bit less than 1 cup.


No, the answer is not reasonable. It should be a bit less than 2 cups.


No, the answer is not reasonable. It should be about 7 cups.


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A student solved this problem and said the answer was 11 7/10 feet.

Tim had three pieces of wood. One piece was 3 1/5 feet long, one piece was 4 3/10 feet long, and the third piece was 4 1/5 feet long. What was the total length of the three pieces of wood?

Is the student's answer reasonable?


No, the answer is not reasonable. It should be about 2 feet.


Yes, the answer is reasonable.


No, the answer is not reasonable. It should be about 6 feet.


No, the answer is not reasonable. It should be about 20 feet.