Your answer is 160 i had this on a test hope this helps
Answer:
Step-by-step explanation:
It is given that, 
We need to find the value of 
As 
Solving LHS

Now comparing the coefficients of 
In LHS the coefficient of
is 25
In RHS the coefficient of
is 
It implies that, 
So, the value of
is 25.
25/x=100/20 criss cross and u will get 500/100=5 then 5 students resivs A.