Question

Which is a better deal 20 oz soda bottle for $1.80 or 12 oz for $1.25

Answer 1

20 oz soda bottle for $1.80

Step-by-step explanation

to solve this , find the unit rate and compare

Step 1

unit rate 1

`\text{unit rate=}\frac{total\text{ cost}}{N\\u\text{mber of oz}}`

then

Let

total cost=$1.80

number of ounces=20

replace

`\begin{gathered} \text{unit rate=}\frac{total\text{ cost}}{N\\u\text{mber of oz}} \\ \text{unit rate=}\frac{1.8\text{ dollars}}{20\text{ ounces}}=0.09\text{ dollars per oz=0.090}(dol)/(oz) \end{gathered}`

Step 2

now, for option 2

Let

cost=1.25 dollars

number of ounces=12

replace

`\begin{gathered} \text{unit rate=}\frac{total\text{ cost}}{N\\u\text{mber of oz}} \\ \text{unit rate=}(1.25)/(12)=0.104\text{ dollars per ounce=0.104}(dol)/(oz) \end{gathered}`

the better deal is teh cheapest option,

Hence, the better deal is option one

20 oz soda bottle for $1.80

I hope this helps you