Final answer:
To find the equivalent rate of 4 quarts to pints, you multiply the number of quarts by the conversion factor of 2, as 1 quart equals 2 pints. Therefore, 4 quarts is equal to 8 pints.
Step-by-step explanation:
The equivalent rate of 4 quarts (qts) to pints can be determined using the unit equivalence 1 quart = 2 pints. To convert quarts to pints, you multiply the number of quarts by the conversion factor since you are converting from a larger unit to a smaller unit.
In this case:
4 quarts × 2 (conversion factor) = 8 pints.
Hence, 4 quarts is equal to 8 pints. This type of conversion is commonly practiced in problems dealing with customary units of capacity.