Answer
the cranberry-apple drink
Work Step by Step
Too much of the cranberry juice will keep the concentrate level too high (above the goal of 25%.). If we use an equal amount of the 15% juice as the 40% juice, the overall drink will be 27.5% (half of the sum of 15 and 40). Thus, we would need more of the 15% beverage to lower the level to 25%.