How much water should be added to 300g 30% sugar syrup to get 18% syrup.

1) Let us find out what is the mass of sugar in the syrup if we know that its content is 30% of the total mass of the syrup.

300 – 100%

X – 30%;

X = 300 * 30/100;

X = 90 grams.

2) Find out the mass of water in the syrup.

300 – 90 = 210 grams.

3) Let’s find out what total mass the syrup with 18% sugar should contain.

90 – 18%

X – 100%

X = 90 * 100/18;

X = 500 grams.

4) Find out how much water you need to add to the syrup if it should be 500 grams.

500 – 90 – 210 = 200 grams.

Answer: to get 18% syrup, you need to add 200 grams of water.