Question

Study the following diagram.
If the number of people in B is $10$ more than A, what is the total number of people in only B(i.e., in B but no in A or C)?

• A. $14$
• B. $24$
• C. $30$
• D. $36$

Answer 1

Answer: (B)

$24$

Total number of people in B $=$ $(x+y+11+5)=x+y+16$

Total number of people in A $=$ $(15+5+10+y)=30+y$

Total number of people in $B=10+$ Total number of people in A

$x+y+16$ $=$ $40+y$

$x=24$

Hence, option B is correct.