Four cups of a salad blend containing 40% spinach is mixed with an unknown amount of a salad blend containing 55% spinach. the resulting salad contains 50% spinach. how many cups of salad are in the resulting mixture?

Four cups of a salad blend containing 40% spinach is mixed with an unknown amount of a salad blend containing 55% spinach. the resulting salad contains 50% spinach.

Let x the amount 55% salad blend

Y = the amount of 50%

The equation:

4 + x = y

4(0.40) +0.55x = 0.50y

Solving the equation

X = 8 cups

Y = 12 cups of the resulting mixture

i believe the answer is d.

hope it you! : d