Henry went to two different music stores to buy some new CDs. At Store A he bought 5 CDs for $70. At Store B he bought 6 CDs for $78. Which store had the best price for a CD and by how much?
Store B has the best price.
A sells for $14 per CD
B sells for $13 per CD
Process:
A = 70/5 = 14
B = 78/6 = 13
To determine which store had the best price for a CD, we'll need to calculate the cost per CD at each store.
Let's start with Store A. Henry bought 5 CDs for $70. To find the price per CD, we need to divide the total cost by the number of CDs:
Cost per CD at Store A = Total cost / Number of CDs
= $70 / 5 CDs
= $14 per CD
Now, let's move on to Store B. Henry bought 6 CDs for $78. To find the price per CD, we'll again divide the total cost by the number of CDs:
Cost per CD at Store B = Total cost / Number of CDs
= $78 / 6 CDs
= $13 per CD
Comparing the cost per CD at both stores, we see that Store B has the better price, with CDs priced at $13 each. Store A, on the other hand, has CDs priced at $14 each.
To determine how much better the price is at Store B, we need to calculate the difference in cost per CD:
Price difference per CD = Cost per CD at Store A - Cost per CD at Store B
= $14 per CD - $13 per CD
= $1 per CD
Therefore, Store B has a better price for a CD by $1.