Question

Study the following chart carefully and answer the question given.
For which pair of courses is the number of boys the same?

• A. E & F
• B. A & D
• C. C & F
• D. B & D

Answer 1

The correct option is C C & F

Number of boys in A$=\frac{20}{100}\times 1200-\frac{30}{100}\times 800=0$

Number of boys in B$=\frac{15}{100}\times 1200-\frac{10}{100}\times 800=100$

Number of boys in C$=\frac{5}{100}\times 1200-\frac{2}{100}\times 800=44$

Number of boys in D$=\frac{35}{100}\times 1200-\frac{30}{100}\times 800=180$

Number of boys in E$=\frac{12}{100}\times 1200-\frac{14}{100}\times 800=32$

Number of boys in F$=\frac{13}{100}\times 1200-\frac{14}{100}\times 800=44$

Therefore, number of boys in C and F are equal.