Answer:
3 students got a perfect score.
Step-by-step explanation:
Total number of students in Mrs. Grape's class = 90
Number of students who earned an A = 3/10 of 90
= [tex]\frac{3}{10}\times 90[/tex]
= 27 students
Out of 27 students the number of students who got perfect score
= [tex]\frac{1}{9}\times 27[/tex]
= 3 students
3 students got a perfect score.
