When writing the congruent triangles, the otder of the letters is EXTREMELY important. This is because, each angle in the first triangle is congruent to its corresponding angle in the second triangle and each side in the first triangle is congruent to its corresponding sode in the second triangle.
Now, we are given that triangle CDA is congruent to triangle XYZ. Based on the above explanation, we can conclude that: angle C is congruent to angle X angle D is congruent to angle Y angle A is congruent to angle Z
2 times 60 is at least 120 minutes. So, if 20 assistants prepare the same amount. We would have to divide 120 minutes to 20 assistants. So the answer would be 6 minutes.
