A 16-ounce bottle of water costing $1.09 works out to $8.72 a gallon. Why is this?

Question

I'm doing a math proeject and i need some help please.

Answer 1

There are 128 fluid oz in a gallon. It takes 8 bottles @ 16 ounces per bottle to make a gallon, so the cost is 8 x $1.09 = $8.72.

Answer 2

If a 16 ounce bottle of water equals $1.09 then 1 ounce would be 14.6788991 cents. Then a 128 ounce bottle would cost $8.72.

Answer 3

Conversion problem!!! =D

Basic problem: Prove the cost of one gallon of water is $8.72.

We are given a starting amount: 1 gallon

We need to find conversions from ounces to gallon:
128 ounces = 1 Gallon

Conversion from ounces to dollars: 16 ounces = $1.09

Set up:
1 gallon x (128 oz / 1 gallon) x ($1.09/ 16 oz) = $139.52/16 = $8.72

Answer 4

128 ounces in a gallon.

you have 16 ounces...

so you have 16/128 of a gallon, which is 1/8 of a gallon.

So $1.09 x 8 = $8.72

Answer 5

There are 128 ounces in a gallon. 128/16 = 8, so if you multiply 8 by the price per 16 oz. bottle, 1 gallon costs $8.72

Answer 6

Is the question "why is it $8.72 a gallon?" If so, you have to ask yourself first why a 16oz bottle is $1.09, because it has 16 ounces, that's how much its worth. How much is a gallon worth? Know what I mean? Essentially, they want you to figure out how many ounces are in a gallon.

1.09 = 8.72
------- -------
16 = X

Answer 7

You need to know this first: there are 128 ounces in a gallon.
The rest is easy. 128/16 = 8, so 1.09 x 8 = 8.72.

Answer 8

16 ounces is one pint. There are 8 pints to a gallon. 8 x $1.09 = $8.72. This is third grade math. If you are just a third grader I'm happy to help. Thanks for the 2 points!

Answer 9

I'm in econ, so I'll throw some econ concepts out there:
- buying in bulk will decrease the price. This is obvious, it's how stores make money. If a store buys a truck load of 16 ounce water bottles, they pay per box, and resell them individually.
- consider the cost of labor, transport, materials to make the bottle, time to bottle the water, cost of machines to bottle the water, the cost of electricity to run the machines, the cost of rent to pay for the warehouse that the machines are in...all of these contribute to the price. When the water is in the store for consumers to buy, you need to pay a cashier, the electricity and rent for the store, the cost of other sales people and the cost of putting that water on the shelf as opposed to another item.
- demand. If I'm thirsty and sitting in class and I've got the choices between a 16 ounce bottle of water and a gallon of water - I'll pick the 16 ounce bottle of water, so will most other people, this increases demand, so prices will go up.

Answer 10

there are 128 ounces to a gallon, which is made up of EIGHT 16 ounce bottales. So EIGHT TIMES $ 1.09 is $ 8.72.