Katie and her brother are both writing a report. Katie write 7/8 of her report and her brother wrote 3/7 of his report. What is the best estimate of how much more Katie wrote than her brother? Replace each addend with 0,1/2,1

Answer is 25/56

Step-by-step explanation:

Given that

Katie and her brother are both writing a report. Katie write 7/8 of her report and her brother wrote 3/7 of his report

TO compare these two fractions we have to make both of them have the same denominator.

We find that as such the two fractions have denominators as 7 and 8 and hence Least common multiple is 56

LEt us make equivalent fractions

7/8 = 49/56

3/7=24/56

Difference i. e. Katie wrote more than her brother = 49/56-24/56

=25/56