On a particular exam, the body in a history class averaged 86 points and the girls in the class averaged 80 points. If the overall class average was 82 points, what was the ratio of boys to girls in the class?

There are 42 boys and 18 girls in a class. What is the percentage of boys in the class ?

If there are 15 boys and 25 girls in a class, what percent of the class is boys?

In a class of 10 boys and 15 girls, the average score on a biology test is 90. If the average score for the girls is x, what is the average score for the boys in terms of x ?

In a class of 40 students, 45% are girls. Find the number of boys in the class .

In a class of 40 students, 45% are girls and the remaining are boys. If the average of the girls marks is 54 and that of the boys is 46, what is the average of the whole class?

In a class, there are 70 students. Thirty of them are girls and the rest are boys. What fraction of the class are boys?

In a class of 100 students, there are 70 boys whose average marks in a subject is 75. If the average marks of the complete class is 72, then what is the average of the girls ?

In a class, the number of boys is 3/2 times the number of girls. If there are 55 students in the class, find the number of boys and girls in the class.

In a class, three are 30 boys and 25 girls. Find the ratio of the number of boys to that of girls.

In the half yearly examination of class IX of a school, the mean marks scored by the boys is 52 and the mean marks scored by the girls is 48. If on the whole, the mean marks of the calss is 50.5, find the ratio of the number of boys to the number of girls in the class.