A bag of potatoes weighing 5 pounds and 12 ounces cost $2.07. What is the cost of 1 pound of potatoes?
One pound of potatoes cost
As one pound is equal to
Hence, one pond of potatoes cost
Hence, one pound of potatoes cost
Another approach. Really it is the same thing in disguise!
To start with this be the same as the other solution. Will very slightly change in the middle. Then end up the same again.
The important thing to remember is that
This is the same as
The cost is
But we need the cost for
Let the unknown cost be