In a class of 60 students, the number of girls is one third the number of boys. Find the number of girls and boys in the class.

In a class of 88 students, the number of girls is 20% more than the number of boys. The average height of the boys is 164 cm and the average height of the girls is 4 cm less than the average height of all the boys and girls in the class. What is the average height (in cm) of all the students in the class ?

In class VI,there are 30 students.If the number of girls is 3 more than twice the number of boys,then the number of boys and girls are:

In a class, if 60% of the students are boys and the number of girls is 36, then the number of boys is:

There are 20 girls and 15 boys in a class.(a) What is the ratio of number of girls to the number of boys? b) What is the ratio of number of girls to the students in the class?

In a class, there are 70 students. If the ratio boys to girls is 5:2, then find the number of girls in the class.

the mean weight of 150 students in a certain class is 60kg .The mean of boys in the class is 70kg and that of girls is 55kg .The number of boys and the number of girls in the class,are respectively