Answer:
3.6 dollars
Step-by-step explanation:
Lets go over what we know:
Each ounce of penut butter cost 0.2$, or 1/5$
We need 18 ounces.
To solve this, lets multiply the cost per ounce by the amount of ounces:
0.2*18
Or
1/5*18
=
18/5
This can be simplfied into:
3 3/5
We know each 1/5 is 20 cents(0.2), so 3 cents would be 3*0.2 = 0.6:
3.6 dollars
So the answer is for 18 ounces, it cost 3.6 dollars.
Hope this helps!
