To determine how many eggs you can purchase with 105 cowry shells, we first need to calculate how many dozens of eggs that amount can buy.
Given that a dozen eggs costs 10 cowry shells, we can find out how many dozens of eggs you can buy with 105 cowry shells:
- Calculate the number of dozens: \[ \text{Number of dozens} = \frac{\text{Total cowry shells}}{\text{Cost per dozen}} = \frac{105 \text{ cowry shells}}{10 \text{ cowry shells/dozen}} = 10.5 \text{ dozens} \]
Since you cannot purchase half a dozen in whole terms, you will be able to purchase 10 dozens.
So, the answer is 10 dozen.