The avocado own a 1/4 acre orchard. Two fifths of the orchard is planted in orange trees. What fraction of an acre in planted in orange trees
\(Two\ fifths\ of\ the\ orchard= \frac{2}{5} \cdot \frac{1}{4}\ acre= \frac{1}{10} \ acre\\\\Ans.\ 0.1\ acre\ in\ orange\ trees.\)