The average score of a class of boys and the girls in an examination is A The ratio of boys and girls in the class 3 : 1. If the average score of the boys of A+1 the average score of the girls is

(a) A 1 (b) A 3 (c) A+1 (d) A+3

The average score of a class of boys and the girls in an examination is A The ratio of boys and girls in the class 3 : 1. If the average score of the boys of A+1 the average score of the girls is

(a) A 1 (b) A 3 (c) A+1 (d) A+3

1 Answer

127 votes

Let the number of boys and girls in the class be and respectively.

Let the average score of the girls be

Then,

127 votes

127