A garden store sells Kentucky bluegrass seed for $6 per pound and ryegrass seed for $3 per pound. How much rye must be mixed with 140 pounds of bluegrass to obtain a blend that will sell for $5 per pound?
A) 70 lb
B) 100 lb
C) 80 lb
D) 85 lb
E) 50 lb

Question

Quizplus · Accepted Answer

The price of the blend ($5 per pound) is exactly in the middle of the prices of Kentucky bluegrass ($6 per pound) and ryegrass ($3 per pound). This means the blend must consist of equal amounts of Kentucky bluegrass and ryegrass to achieve the $5 per pound price point. Therefore, 140 pounds of ryegrass must be mixed with 140 pounds of bluegrass.

A Garden Store Sells Kentucky Bluegrass Seed for $6 Per