Answer:
Step-by-step explanation:
a) She has left 25% of her work. 1/4 is 25%.
b) In the model you can see that the total work is divided in 4 equal portions. Each portion represents 1/4 of the workday.
In the second figure you can see in green marked the portions of workday worked, as it is 3/4 it means 3 portions of a total of 4. So, one portion is left, that is marked in yellow color. One portion of a total of 4 portions, it means 1/4.
To express 1/4 in percentage, you need to divide 1 by 4 and the multiply by 100.
[tex]\frac{1}{4} *100=25percent[/tex]
The percent of workday left is 25%