Question

The ratio of the volume of oxygen to nitrogen in the air is 1:4 Find the volume of oxygen and the volume of nitrogen in 10 litres of air

Answer 1

oxygen = 2 litres and nitrogen = 8 litres

Answer 2

1:4

is the volume of oxygen and nitrogen

1x+4x = 5x

==> 5x = 10 litres

==> x = 2 litres

==> 1(2) ==> 2 litres

==> 4(2) ==> 8 litres

so, answer = 2:8