On a particularly busy day at DisneyWorld 527 people are que

On a particularly busy day at DisneyWorld, 527   people are queried as to their activities regarding the Jungle Cruise (JC), the Haunted Mansion (HM), and Treasure Island(TI). Of the queried, 249   went on JC, 265   went into HM, 243   went to TI, 92   went to both JC and HM, 109   went to both HM and TI, 91   went to both JC and TI, and   38   went to all three.

1) What fraction of the people who went to HM and on the JC did not go to TI?

Solution

What fraction of the people who went to HM and on the JC did not go to TI?

54 persons only went both HM and JC

fraction = 54/527 = 0.1025