Question

There are 42 pupils in
the class . 3/4 of the boys
and 2/3 of the girls travel to school by bus
The total number of boys and girls who travel
to school by bus is 30
(a) How many boys are there in the class?
(b) How many girls travel to school by bus?​

Answer 1

Answer:a ) 24 boys

b)12 girls

Step-by-step explanation:Take boys=x and girls=y

This is simultaneous equation

3/4x +2/3y =30

x + y = 42

x= 24

y = 18

b) 2/3 of 18 girls

=12 girls

Answer 2

Answer: 24 boys, 12 girls

Step-by-step explanation:

3X+2X = 30

So, X = 6students

So, total no. of boys there in the class = 4X = 24

and, total no. of girls travel to school by bus = 2X = 12