ExpertsGlobal5
In a class of 100 students, how many students play volleyball?
(1) 60 students in the class play basketball and 24 students play volleyball but not basketball.
(2) The number of students who play both basketball and volleyball is equal to the number of students who play neither.
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Let’s consider a classic two set venn diagram, where
a = Playing Basket ball only.
c = Playing Volleyball only.
b = Playing both,
d = Neither.
Sum of individual components of a set should be equal to the total.
a+b+c+d =100.
We need to find: (b+c) = ?
Statement 1:
60 students in the class play basketball and 24 students play volleyball but not basketball.
a+b = 60, c =24.
a+b+c = 84 and this gives d =16.
we need b+c?
Hence,
Insufficient.
Statement 2:
The number of students who play both basketball and volleyball is equal to the number of students who play neither.
b = d.
This makes the unknown equation to three. But still
Insufficient. Combining both statements, b= d=16.
a+b 60 and c = 24.
we need b+ c = 16+24 = 40
Thus,
Sufficient
Option C