Final answer:
To find out how many pink balls are in a package of 21 when two out of three balls are pink, we calculate two-thirds of 21, which results in 14 pink balls in the package.
Step-by-step explanation:
If two out of three balls in a multi-colored package are pink, we can set up a proportion to find out how many pink balls would be in a package of 21. We are essentially looking to find two-thirds of 21, since two out of three represents the fraction 2/3.
Here is the calculation:
- Calculate two-thirds of 21: (2/3) × 21
- Multiply 2 by 21 to get 42.
- Divide 42 by 3 to get 14.
So, according to the proportion given, if we have a package of 21 balls, there would be 14 pink balls.