Question

Select the equation that most accurately depicts the word problem.

A 3-pound tub of butter at n dollars per pound costs $3.85

Answer 1

You first would set it up as a fraction, the cost goes on TOP and the pounds go on the bottom so it would look like this: 3.85/ 3  so you have to make the bottom number equal 1 cause we want to find the cost for 1 pound of butter so we divide 3 by 3 to equal 1 then we divide by 3 on top to find the cost per pound so the equation would look like this:

3.85                        3                1.28                 so it costs 1.28$ per pound
-------   divided by ------   =     ---------
3 lbs                        3                  1

Answer 2

Answer: The required equation is,

$3n=3.85$

Step-by-step explanation:

Here, n represents price of butter ( in dollars ) per pounds,

⇒ Cost of 1 pounds of butter = n

⇒ Cost of 3 pounds of butter = 3n,

According to the question,

Cost of 3 pounds of butter = $ 3.85,

$\implies 3n = 3.85$

Which is the required equation that shows the given situation.