If a hen and a half lays an egg and a half in a day and a half how many eggs would seven hens lay in six days?

This is a classic. Although there is literally no such thing as a chicken-and-a-half or an egg-and-a-half, we can still solve the problem. If you determine the rate at which one chicken lays one egg, you can calculate the answer. Given: 1.5 eggs per 1.5 chickens per 1.5 days. So, one chicken can lay one egg in 1.5 days. Hence, it will take one chicken 12 times 1.5, or 18, days to lay a dozen eggs.