there are 9 more boys than girls in a class . There are 37 students in all . how many girls are there in the class ? 

Of the 48 students, 21 are grils. How many more boys are there than girls?

Trong 48 học sinh, có 21 hs là nữ. Hỏi có bao nhiêu hs nam?

in a class A of 160 students, the ratio of boys to girls is 3 to 5.in the class B, the ratio of boys to girls is 3 to 2. when the to classes are combined, the ratio of boy to girls is 1 to 1. how many students are there in the class B

A shool has 24 classes and there are 40 students in each class. 1/8 of the students wear glasses and 1/12 of those who wear glasses are boys. How many schoolgirls wear glasses in the schoool?

help me!

Class 4A has 45 students, class 4B has 42 students. How many students are there in whole classes

-> There are .............. students

Class 4A has 32 students, class 4B has 36 students. How many students are there in whole classes

.There are 16 rows of  seats in a school hall. There are 75 seats in the last row. If there is an increase of 3 seats, starfting from the first row, 
a.How many seats are there in the first row?
b. How many seats are there in the school hall?

In a school, there are four Primary 5 clases. There are 2 monitors in each class. For every fortnight's monitor meeting, only one monitor from each class is required to attend. 

A,B,C,D attended the first meeting.

E,B,F,D attended the second meeting.

A,E,B and G attended the third meeting.

If H had not attended any of these meetings, state the two monitors in each class.