Question

What is the ratio of the number of men learning dancing to the number of women doing the same?

• A. 8 : 11
• B. 5 : 9
• C. 2 : 7
• D. 3 : 5
• E. None of these

Answer 1

The correct option is C 2 : 7

Number of men in the building $=80$
Number of women $=\frac{80\times 62.5}{100}=50$
Men who learn to dance $=8$
Women who learn to sing $=\frac{50\times 24}{100}=12$
Women who watch movies $=50\times \frac{1}{5}=10$
Men who match movies $=\frac{13}{2}\times 10=65$
Men who learn to sing $=80-65-8=7$
Women who learn to dance $=50-10-12=28$
Required ratio $=8:28=2:7$