Question

Mrs. Barlow's math class took a test yesterday. Out of 100 students, 70% of them passed. How many of Mrs. Barlow's students

Answer 1

the answer is 70

Explanation:

each student counts as one percent

Answer 2

x over 100 = 70 over 100

cross multiply 70 by 100, then divide by 100 to get 70, then subtract 70 from 100 to get 30.

so 30 students failed the test