Question

Given below is the pie chart showing the distribution of number of students of a school who are involved in 5 different games. The table shows the ratio of boys to girls among them. Study them carefully and answer the following questions.
Q. What is the ratio of number of boys in football to the number of girls in tennis and swimming together?

• A. 50:81
• B. 45:79
• C. 40:83
• D. 40:81
• E. None of these

Answer 1

The correct option is D 40:81

Number of boys in football $=\frac{5}{9}\times \frac{20}{100}\times 1800=200$
Number of girls in swimming and tennis together $=(\frac{5}{8}\times \frac{12}{100}\times 1800)+(\frac{3}{5}\times \frac{25}{100}\times 1800)=405$ Reqd. ratio = 200:405 = 40:81