The marks scored ina test by a class of 25 boys are as folowing

The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls?

The mean score 1n a test of the 12 boys in a class was 16 while the overall mean of the 30 students in the class was 18.1. What was the mean score of the girls?

Mean marks scored by the students of a class is 53. The mean mark of the girls is 55 and the mean mark of the boys is 50. What is the percentage of girls in the class?

A class consists of 50 students out of which 30 are girls, the mean of mark scored by girls in a test is 45 and that of boys is 30. determine the mean score of the whole class.

The average score of a class of boys and girls in an examination is A .The ratio of boys and girls in the class is 3:1. If the average score of the boys is A+1, the average score of the girls is A-1 (b) A-3 (c) A+1 (d) A+3

Let the average score of a class of boys and girls in an examination be p. The ratio of boys and girls in the class is 3: 1. If the average score of the boys is (p + 1), then what is the average score of the girls?

The marks scored by 40 students in a Mathematics test are given below: Prepare the frequency distribution with classes 0-4, 5-9.....

The average marks of 48 students in a class is 45. the average marks of the boys in the class is 40 and average marks of the girls in the class is 50. what is the ratio between the numbers of boys and the number of girls in the class ?