Answer:
25
Explanation:
1) Find
of 48
To find this we have to do 48 divided by then multiplied by one!
This means that the teacher graded 8 quizzes before school.
2) Add how many was graded after school
We know that the teacher also did 15 of how many quizzes were left over after school.
Previously he/she had done 8 so we have to subtract this by 48
15 more were done so we have to subtract this too...
25 are left!
Hope this helps, have a lovely day! :)