Unit Rate Examples Page 3

Your local grocery store is having a special on Vitamin Water. They are selling a 12-pack of 20 oz bottles for $11.50. The 32 oz bottles are also on sale for $1.45. Should you buy one 12-pack of 20 oz bottles or eight 32 oz bottles?

This one is a bit tricky because we can't compare the cost per bottle, since the bottles are different sizes. Instead, we need to compare the cost per total ounces.

The 12-pack has a total of , so its unit cost (cost per ounce) is:

If you buy eight 32 oz bottles that is a total of  at a cost of . So the unit cost is:

So, you might as well purchase 8 of the 32 oz bottles and make your money go further.