Answer:

Step-by-step explanation:
Let x = number of books that Hannah donated
We know that the number of students is 150 and the total number of books is represented by b, we can write that as:
Average number of books donated by each student = 
Now we know that Hannah donated 3 times as much as the average. We can write that as:

2/5= 40%, so no, they are not equivalent numbers,<span />
Answer:
Step-by-step explanation:
1+2
+2v+4