Lizzy: There were 200 students on a field playing football. Suddenly a military plane flew by, and 3/4 of the students looked up. How many eyes saw the airplane?.
Me: Hmmm, let me think. I think this is the detailed solution:
If there were 200 students on the field and 3 / 4 of the students looked up at the flying plane, 3 / 4 * 200 = 150 students saw the plane. Since each student has two eyes, the number of eyes that looked at the plane is 2 * 150 = 300 years. Final answer: 300.