Answer:
a) y= 0.65x
b) 2000
Explanation:
a) If x=the number of students who are offered admission to the university and y =the number of students who actually enroll the ratio y/x= 65/100
So if we multiply both sides by x, we will get y=0.65 x
b) If y= 0.65x and we want y= 1300, replace this into the equation , then we have

Then x=
, that is x= 2000