How many ml of cranberry juice is required to prepare a 50 ml 8% cranberry solution using a 20% cranberry stock solution.?

To solve this we use the equation,

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.

20% x V1 = 8% x 50 mL

V1 = 20 mL

Hope this answers the question. Have a nice day.