Difficulty: Hard

Average Score: 40%

The table shows the temperature in degrees Fahrenheit (°F) recorded at three different times on a certain day in Montana. What is the difference between the greatest and least recorded temperature, in "F, for the day?

The cost of 3 identical cans of peaches at a store is $2.67. At this rate, what is the cost of 8 cans of peaches?

Rationale

$7.12

To determine the cost of 8 cans of peaches, we first find the cost per can by dividing the total cost of 3 cans ($2.67) by 3. This gives us a unit price of $0.89 per can. Multiplying this unit price by 8 cans results in a total cost of $7.12.

A ($5.34) YOUR ANSWER

This amount represents the cost of just 6 cans of peaches, calculated as $2.67 divided by 3, then multiplied by 6. Therefore, it does not reflect the cost for 8 cans, as it is less than the correct calculation.

B ($7.12) CORRECT

This is the correct choice, derived by first calculating the cost per can as $0.89 and then multiplying that by 8. The calculation ($0.89 * 8) confirms that the total cost for 8 cans is indeed $7.12.

C ($8.01) YOUR ANSWER

This cost is slightly higher than the actual total. It could result from a miscalculation or rounding error when estimating the price per can. Nevertheless, it does not accurately reflect the total for 8 cans based on the provided unit price.

D ($21.36) YOUR ANSWER

This amount suggests a massive overestimation, likely derived from multiplying the total cost of 3 cans by 8 instead of calculating the unit price first. It is not a valid option based on the correct methodology for finding the cost of 8 cans.

Conclusion

To accurately calculate the price of 8 cans of peaches, one must first find the unit price by dividing the total cost of 3 cans. The final calculation shows that the correct cost for 8 cans is $7.12. Understanding how to break down and calculate unit prices is essential for determining total costs in similar scenarios.

The cost of 3 identical cans of peaches at a store is $2.67. At this rate, what is the cost of 8 cans of peaches?

$7.12

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