ANSWER: 2240
Explanation: using the percentage, move the decimal back two spaces.
36 >>> 3.6 >>> 0.36
Now multiply 0.36 times 3500 to find out how many students PASSED. You get 3500 x 0.36 = 1260.
Finally, to find out how many FAILED, subtract how many PASSED (1260) from the total (3500) to get 3500 - 1260 = 2240