If a triangle and a parallelogram are on the same base and between the same parallel

If a triangle and a parallelogram are on the same base and between the same parallel lines, then find the ratio of the area of the triangle to the area of parallelogram.

Since, if a triangle and a parallelogram are on the same base and between the same parallel lines, then the area of a triangle is half of the area of a parallelogram. So, required ratio is 1:2.