his table shows the price of Candy Bar A for different quantities purchased.

Question

($) Cost of Candy Bar A
Quantity ($) Cost
1 1.25
2 2.50
3 3.75
4 5.00
5 6.25
The cost of Candy Bar A is displayed in the table. The proportional relationship between the cost and quantity for Candy Bar B is represented by the equation y=x
. Which candy bar is the cheapest cost per bar? Enter 1 for Candy Bar A. Enter 2 for Candy Bar B.

Answer 1

To find out which candy bar has the cheaper cost per bar, we can calculate the cost per bar for both Candy Bar A and Candy Bar B.

For Candy Bar A, the costs for different quantities are:

• 1 bar: $1.25 → cost per bar = $1.25
• 2 bars: $2.50 → cost per bar = $2.50 / 2 = $1.25
• 3 bars: $3.75 → cost per bar = $3.75 / 3 = $1.25
• 4 bars: $5.00 → cost per bar = $5.00 / 4 = $1.25
• 5 bars: $6.25 → cost per bar = $6.25 / 5 = $1.25

So for Candy Bar A, the cost per bar is consistently $1.25.

For Candy Bar B, the relationship is represented by the equation \( y = x \). This means that the cost is equal to the quantity:

• 1 bar: $1 → cost per bar = $1
• 2 bars: $2 → cost per bar = $1
• 3 bars: $3 → cost per bar = $1
• 4 bars: $4 → cost per bar = $1
• 5 bars: $5 → cost per bar = $1

So for Candy Bar B, the cost per bar is consistently $1.

Comparing the two:

• Candy Bar A costs $1.25 per bar.
• Candy Bar B costs $1 per bar.

Therefore, Candy Bar B is the cheaper option.

The answer is 2 for Candy Bar B.