Andy C. answered 06/01/18
Tutor
4.9
(27)
Math/Physics Tutor
A VENN DIAGRAM is best to visualize the problem.
3/10 = 30% have seen Handsome Prince
and 1/10 = 10% have seen both
Since 35% have seen Killer Frogs and 10% of them saw both that means 25% have only seen Killer Frogs.
LIkewise, since 30% have seen Handsome Prince, and 10% of them saw both, that means 20% of them have
only seen Handsome Prince.
So 25%+10%+20% = 55% have seen one or both of the movies.
That means 45% have not seen either of the movies.
45% of ? = 54
45/100 * ? = 54
? = 54*100/45 = 5400/45 = 120
25% of 120 = 30 <--- have seen only Killer Frogs
10% of 120 = 12 <-- have seen both
20% of 120 = 24 <--- have seen only Handsome Prince
45% of 120 = 54 <--- have seen neither