Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.

A boy scout troop is selling Christmas trees at a local tree lot. In the morning, they sold 6 Douglas Fir trees and 16 Noble Fir trees, earning a total of $986. In the afternoon, they sold 6 Douglas Fir trees and 24 Noble Fir trees, earning a total of $1,386. How much does each type of tree cost?

A Douglas Fir costs $_____
and a Noble Fir costs $_______