Question

Which is the best buy?

A)$19.25 for 11 candy bars
B)$15.39 for 9 candy bars
C)$17.30 for 10 candy bars
D)$22.62 for 13 candy bars

Answer 1

B

Explanation:

Let's find the unit price of each choice. Unit price is essentially how much one object is worth.

A) We know that there is $19.25 for 11 candy bars, so to find the unit price, simply divide 19.25 by 11:

19.25/11 = $1.75 / candy bar

B) We know that there is $15.39 for 9 candy bars, so to find the unit price, simply divide 15.39 by 9:

15.39/9 = $1.71 / candy bar

C) We know that there is $17.30 for 10 candy bars, so to find the unit price, simply divide 17.30 by 10:

17.30/10 = $1.73 / candy bar

D) We know that there is $22.62 for 13 candy bars, so to find the unit price, simply divide 22.62 by 13:

22.62/13 = $1.74 / candy bar

Comparing all these unit prices, we see that the deal from part B is the lowest, so that's the best one.

Hope this helps!

Answer 2

B

Explanation:

When you divide each of the prices by the amount of candy bars, B is the lowest. The price for 1 candy bar with A's price is 1.75. The price for 1 candy bar for B's is 1.71. The price for 1 candy bar with C's is 1.73 and the price of 1 candy bar for D's is 1.74. Again, B has the lowest price for 1 candy bar so the correct answer is B.