Answer:
76
Step-by-step explanation:
22-3=19
19x4=76
We suppose that every one paid $10 for entrance. So the total paid should be $1000. Now there is $300 more. The faculty should pay $15 more than student. So the faculty number is $300/15=20. Then the number of student is 80.
<span>In 4 years, you will have $324.73</span>