Question
The number of students in class IX and class X is 42 and
45, respectively. The ratio of the number of boys to girls in classes is IX and X is 9: 5 and 8: 7, respectively. What is the difference between the total number of boys and the total number of girls in both the classes taken together?Solution
Number of boys in class IX = 42 × (9/14) = 27 Number of girls in class IX = 42 × (5/14) = 15 Again, Number of boys in class X = 45 × (8/15) = 24 Number of girls in class X = 45 × (7/15) = 21 Total of boys in two classes = 27 + 24 = 51 Total of girls in two classes = 15 + 21 = 36 Difference = 51 - 36 = 15 ∴ The difference between the total number of boys and the total number of girls in both the classes taken together is 15.
Consider the following statements with reference to the Kailash temple at Ellora:
1. It is the largest monolithic structure in the world.
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