1. Mrs. Grape has 90 students. On her last test, 3/10 of these students earned an A. Of those students, 1/9 got a perfect score. How many students got a perfect score? 2. Using the information from the problem above, what fraction of the total students got a perfect score on the test?

1/30

Step-by-step explanation:

3/10 of 90 = 27

1/9 of 27 = 3

3/90 = 1/30

3       1/30

Step-by-step explanation:

90 * 3/10   got A

 of these 1/9 = perfect

  90 * 3/10 * 1/ 9 = 3

3 out of 90 = 3/90 = 1/30

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours

answer: the answer for that is 22/3