In an equilateral ΔABC, D is the midpoint of AB and E is the midpoint ar(ΔABC): ar(ΔADE) = ?

Given that D and E are of AB and AC respectively,
Therefore,

Δ ABCΔ ADE
If two triangles are similar, the ratio of the area of triangle is equal to the square of the ratio of the sides.
∴ The correct option is (b).