A certain shampoo is available in two sizes. A twelve point six ounce bottle cost two dollars and thirty seven cents. A twenty five point three ounce bottle cost five dollars and twenty four cents. Find the unit price for each size.

To find the unit price for each size, you need to divide the total cost of each bottle by the number of ounces in that bottle.

For the 12.6 ounce bottle:
Unit price = $2.37 / 12.6 oz = $0.1881 per ounce

For the 25.3 ounce bottle:
Unit price = $5.24 / 25.3 oz = $0.2075 per ounce

So, the unit price for the 12.6 ounce bottle is $0.1881 per ounce and for the 25.3 ounce bottle is $0.2075 per ounce.