Let's say that a 12-ounce cup of coffee is 10 percent milk. If you add 2 ounces of coffee, what is the percentage of milk in the new mixture? Round to the nearest percent.

Question

Let's say that a 12-ounce cup of coffee is 10 percent milk. If you add 2 ounces of coffee, what is the percentage of milk in the new mixture? Round to the nearest percent. ​

Quizplus · Accepted Answer

The amount of milk in the 12-ounce cup of coffee is 10% of 12 ounces, or 1.2 ounces. If 2 ounces of coffee are added, the total amount of coffee is 14 ounces. The amount of milk in the new mixture is still 1.2 ounces. So, the percentage of milk in the new mixture is 1.2/14=0.086, which is approximately 9%. Therefore, the best choice is C.

Let's Say That a 12-Ounce Cup of Coffee Is 10