Question

Two substances of densities
ρ
1
and
ρ
2
are mixed in equal volume and the relative density of the mixture is
4
. When they meet in equal masses, the relative density of the mixture is
3
. The values of
ρ
1
and
ρ
2
are​

Answer 1

Answer:

I can't understand...

Answer 2

Answer:

.......................