Answer:
The new mixture will have 11.1 grams of sugar.
Step-by-step explanation:
Given that Stefani has 18 grams of 20% sugar syrup while John has 30 grams of 25% sugar syrup, if these were combined, to determine the amount of sugar that the new mixture would have, the following calculation must be performed:
18 x 0.2 + 30 x 0.25 = X
3.6 + 7.5 = X
11.1 = X
Therefore, the new mixture will have 11.1 grams of sugar.