250 mL of x M solution and 500 mL of y M solution of a solute A are mixed and diluted to 2 litre to produce a final concentration of `1.6` M.
if `x : y = 5 : 4` calculate x and y .

Answer

8.86

Explanation

`250 x + 500 y =1.6 xx 2000`
`x//y = 5//4`
`x = 4.92, y = 3.94` or `x + y = 8.86`