There were some students in the school hall.

(a) At first, the number of boys was 1/4 the number of girls.

Then, 1/3 of the boys and 1/2 the girls went home. A total of 84 students went

home. How many students were there in the school hall at first?

(b) The number of students at first was 3/2 times the number of teachers.

How many teachers were in the school hall?

Guest Sep 16, 2021

#1**+1 **

b = 1/4 g

1/3 b + 1/2 g = 84

1/3 (1/4 g ) + 1/2 g = 84

7/12 g = 84

g = 144 then b = 36 b + g = _______________

ElectricPavlov Sep 16, 2021

#3**0 **

The number of students at first was 3/2 times the number of teachers.

How many teachers were in the school hall?

given, number of students at first

= 3/2 times the number of teachers

=> number of teachers = 2/3 number of students

= 2/3 * 180 = 2 * 60 = 120

So there were 120 teacher in the school hall

Guest Sep 16, 2021