Answer:
$0.28 per orange
Explanation:
The unit cost is the price per orange. 
In order to find the unit cost, we divide the total price by the number of oranges.

In this case:
We have:
Total price = $ 1.96
No. of oranges = 7 
Now, Substitute the given value:


Therefore, the unit cost of 7 oranges for $1.96 is $0.28 per orange.