`4` boys and `3` girls spent `Rs.120` on the average, of which boys spend `Rs.150` on the average, then the average amount spent by girls is

The average expenditure of 4 Boys and 3 Girls is Rs. 120 . If the average expenditure of Boy's is Rs. 150 then find out average expenditure of Girl's.

The average weight of a class of 15 boys and 10 girls is 38.4 kg . If the average weight of the boys is 40 kg, then what is the average weight of the girls ?

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 total weight of 12 boys and 8 girls is 1080 kg. If the average weight of boys is 50 kg, then what will be average weight of girls?

There are 30 boys and 60 girls in a class . If the average age of boys is 12yr and average age of girls is 10yr , then find out the average age of the whole class .

In a class, the number of boys and girls are distinct. The average age of all the student in the class equals the average of the average age of the boys and the average age of the girls. The sum of the average age of the boys and the average age of the girls is 10 years. Find the average age (in years) of the boys of the class

The average score of 42 students in a test is 69. The ratio of the number of boysto that of girls is 10 : 11. The average score of the boys is 20% more than that of the girls. The average score of the boys is :

The average score of 84 students (boys and girls) in a test is 57 . The ratio of the number of boys to that of girls is 10 : 11 . The average score of boys is 20% less than that of girls. What is the average score of girls in the test?