what is the percent concentration of sugar in the resulting mixture?

Question

ten grams of sugar are added to a 40 gram serving of breakfast cereal that is 30% sugar.

Answer 1

To calculate the percentage of the resulting mixture, we first have to determine the number grams of sugar in the original mixture. This is determined by multiplying 40 by .30 = 12.

 

If we add 10 grams to this, the total number of grams of sugar would increase to 22. To determine the new sugar concentration, we divide 40 by 22, which is 55%.