I hope this answers your question !
Does it want the answer 6/8? I think this is right.
Answer:
4
+2
Step-by-step explanation:

=
×
=
=6
+ 6 -
- 
=6
+ 6 - 4 - 
=6
+ 2 - 
=6
+ 2 - 2
=4
+2
for
= 2
,
= 
= (
)^2 ×
=2 ×
Convert G to kg
560/1000=.56 kg a day
If the bake off was 5 days
.56*5= 2.8kg... per week
2.8kg*3= 8.4 kg for 3 weeks
If it was 7 days
.56*7 = 3.92 kg per week
3.92*3= 11.76 kg for 3 weeks