Mrs. Friedmon baked a walnut cake for her class. The models below show how much cake she brought to school and how much she had left at the end of the day.

Before School
1 whole shaded

7/8 shaded

After School
1/4 shaded

Which fraction represents the difference between the amounts of cake Mrs. Friedmon had before school and after school?

A. 5/8

B. 1 1/2

C. 1 5/8

D. 2 1/2

2 answers

1 - 1/4 = 3/4
Not a choice, so I suspect a typo or a garbled question.
Before school, Mrs. Friedmon had 1 and 7/8 of walnut cake. After school, she had 1/4 of the cake left. So, to find out the difference between the two you would subtract.
1 7/8-1/4
Change the denominator of 1/4 to 8.
1 7/8-2/8= 1 5/8.
ANSWER: 1 5/8
I hope this helped.