a shop owner blends three types of tea,a,b and c,in the ratio 6:4:7 . if the mass of tea c in the mixture is 28 kg , find the difference in the masses of the other two types of tea.

Respuesta :

6   : 4   : 7

24 : 16 :28

If 

6 is a
4 is b
7 is c

You have to multiply all the numbers by 4 in order to find a common ratio 
You have to multiply all the numbers by four to get a common ratio