how much will the oranges cost?

Question

three oranges weigh about 1 pound. if you buy 1 1/2 dozen oranges at the best price how much will the oranges cost?

Answer 1

To answer this problem, you may use the "unit price" (that is, the price per pound) to determine the total cost.

 

given:  3 oranges is about 1 pound

 

1 1/2 dozen is 3/2 dozen is (3/2 dozen)(12 oranges/dozen) = 18 oranges           [dozen cancels out]

Now, (18 oranges)*(1 pound)/(3 orangs) = 6 pounds                     [oranges cancel out]

 

What you need now is the "unit price" of oranges [in dollars per pound]:

     (6 pounds)*(x dollars/pound) = 6x dollars                [fill in the value for x]