Question

Q7. The ratio of girls and boys in a class is 1:3.
Set up an equation between the students of a
class and boys and then draw its graph. Also
find the number of boys in a class of 40
students from the graph.

Answer 1

Answer:

40 = 1:3

1:3 = 40

so

40 = 13

13 = 1:3

then ,

1:3 = 13