Question discussion

Study the given pie chart and answer the following question.The ratio of the number of boys and girls in class X is 4 : 5 and the ratio of…

3612Medium DSSSB TGT Computer Science 0 replies 2 views

Study the given pie chart and answer the following question.

Figure for question 47

The ratio of the number of boys and girls in class X is 4 : 5 and the ratio of that of boys and girls in class VII is 5 : 9. What is the ratio of the number of boys in class VII to the number of girls in class X?

A4 : 3
B4 : 5
C5 : 4
D3 : 4

Correct answer: D

Explanation

Class VIII has 63° = 105 students, so 1° = 5/3 students. Class VII = 75.6 × 5/3 = 126 and class X = 64.8 × 5/3 = 108. Boys in VII = 126 × 5/14 = 45 and girls in X = 108 × 5/9 = 60. Ratio = 45 : 60 = 3 : 4.

Join the discussion Report an error

Discussion 0

Nobody has replied yet. Start the discussion!