27. On the way to a family camping weekend, the Estradas stopped at a roadside stand to purchase firewood. The stand sold bundles of pine firewood for $2 per bundle and bundles of hickory firewood for $4 per bundle. The Estradas purchased a total of 25 bundles of pine firewood and hickory firewood for $66. How many bundles of pine firewood did the Estradas purchase?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Assuming that the pine firewood with unit x is purchased, the equation 2x+4(25-x)=66 can be formulated according to the meaning of the question, and the solution is x=17, so choose C