In an intercollegiate competition that lasted for 3 days, 150 students took part on day 1, 110 on day 2 and 140 on day 3. If 75 took part on day 1 and day 2 and 25 took part on day 2 and day 3 and 15 took part on all three days, how many students took part only on day 2?
Choose the correct option: A) 50 B) 35 C) 45 D) 25 E) 60
25ay 1&amp;2 = 75; Only 25ay 1&amp;2 (75 -15) = 60,   25ay 2&amp;3 = 25; Only 25ay 2&amp;3 (25 -15) = 10,   Only 25ay 2 = 110 - (60+10+15)= 
<gadget id="calculator">110 - (60+10+15)</gadget>
<output>25</output>
25   Answer:25
<result>D</result>
In an intercollegiate competition that lasted for 3 days, 150 students took part on day 1, 110 on day 2 and 140 on day 3. If 75 took part on day 1 and day 2 and 25 took part on day 2 and day 3 and 15 took part on all three days, how many students took part only on day 2?