Question

You can buy a 28oz box of pancake flour for $1.12 or a 2lb. sack of pancake flour for $1.32. To the nearest cent, What is the difference in price per pound of the two kinds of pancake flour?

The alternatives are as follows a. $0.64, b. $1.32, c. $0.66 and d. $0.02

Answer 1

2 cents

Explanation:

To find the difference, we must first find the cost per pound of each type of flour.

The first one is $1.12 for 28 ounces, or 1 pound and 12 ounces (16 ounces is 1 pound).

Set up a proportion to find the price per pound (x):
`1.12/28=x/16 rarr` Price/ounces

`28x=17.92`

`x=0.64 rarr` The first option costs 64 cents per pound.

The second one is $1.32 for 2 pounds. Divide 1.32 by 2 to get what the price for one pound equals.

`1.32/2=0.66 rarr` The second option costs 66 cents per pound.

`0.66-0.64=0.02 rarr` The difference is 2 cents