250cm3 of fresh water of density 1000kgm-3 is mixed with 100cm3 of sea water of density 1030kgm-3. Calculate the density of the mixture. *

And we can do a similar procedure for the sea water:

And after convert the volume to m^3 we got:

And then the density for the mixture would be given by:

And replacing we got:

Step-by-step explanation:

For this case we can begin calculating the mass for each type of water:

And after convert the volume to m^3 we got:

And we can do a similar procedure for the sea water:

And after convert the volume to m^3 we got:

And then the density for the mixture would be given by:

And replacing we got:

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.