Final answer:
To convert 15 milliliters to teaspoons, divide 15 milliliters by the conversion factor of 5 milliliters per teaspoon, resulting in 3 teaspoons.
Step-by-step explanation:
To find out how many teaspoons are in 15 milliliters, we need to use the conversion factor that 1 teaspoon is approximately equal to 5 milliliters.
Given that 1 teaspoon = 5 milliliters, we can set up a simple division to find the number of teaspoons in 15 milliliters:
15 milliliters ÷ 5 milliliters/teaspoon = 3 teaspoons
Therefore, 15 milliliters is equal to 3 teaspoons.