Question

How many liters of water must be added to 15 liters of 40 % sugar syrup to obtain 30 % sugar syrup?

Answer 1

i think he would have to add 5 liters of water!

Explanation:

Answer 2

5L

Explanation:

Concentration is calculated by dividing the mass of solute(sugar) with the volume of solvent(water). In this case, you want to dilute the solution from 40% to 30%. You just add more solvent/water so the solute/sugar weight will be the same.sugar weight= volume * concentration

sugar weight1 = sugar weight2

volume1 * concentration1 = volume2 * concentration2

15 L* 40%= 30% * concentration2

concentration2= 6L / 30%

concentration2= 20L

You need to add water and change the volume of the solution from 15L into 20L. The amount of water you need to add will be: 20L-15L= 5L