Answer:
There are 40 students in the class.
Step-by-step explanation:
We are given the following in the question:
Percentage of class that failed = 15%
Percentage of class that made mistakes but did not fail = 25%
Number of students that got perfect score = 24
Percentage of students that got perfect score =

Let x be the total number of students in the class.
Then, we can write:

Thus, there are 40 students in the class.
Ratio equivalent to 2:9 is 4:18, 6:27
If you multiply the same number to both numbers, the ratio would always be the same.
I think the 40 30 20 should be going up not down like this 20 30 40
Answer:
Y= -1x -3
Step-by-step explanation:
0,3
1,2
2-3=-1
1-0=1
-1/1=-1
y intercept is 3