Final answer:
After 7 hours, 11 lambs ran away, 2 goats took a 2-hour nap, and the sick sheep only ate half.
After 10 hours, the remaining animals would have eaten 525 square yards, so the square yards of land that didn't get eaten is 475.
Step-by-step explanation:
To find the square yards of land that didn't get eaten, we need to calculate how much land was left to be eaten after 10 hours, and then subtract the amount that was eaten.
After 7 hours, 11 lambs ran away, 2 goats took a 2-hour nap, and the sick sheep only ate half of what she should have.
So, the number of animals still eating after 7 hours is:
- Lambs: 50 - 11 = 39
- Goats: 10 - 2 = 8
- Sheep: 6 - 1/2 = 5.5
After 10 hours, the remaining 39 lambs, 8 goats, and 5.5 sheep would have eaten:
- Lambs: 39 * 10 = 390 square yards
- Goats: 8 * 10 = 80 square yards
- Sheep: 5.5 * 10 = 55 square yards
Therefore, the total area that would have been eaten is 390 + 80 + 55 = 525 square yards.
Since the total area of the land is 1000 square yards, the square yards of land that didn't get eaten is 1000 - 525 = 475 square yards.