The conversion of tons to pounds seems to have inconsistencies in the values provided.
The correct conversion rate is:
- 1 ton (US) = 2,000 pounds
- 1 metric ton = 2,204.62 pounds
From your data:
- For 2 tons, the correct value should be 4,000 pounds. (This is accurate.)
- For 4 tons, the correct value should be 8,000 pounds. (This is also accurate.)
- For 10 tons, the correct value should be 20,000 pounds. (This is accurate as well.)
- However, for 12 tons, the value given as 40,000 pounds is incorrect. The correct amount should be 24,000 pounds (12 tons x 2,000 pounds/ton).
Therefore, the error the student most likely made was in calculating the conversion for 12 tons, resulting in an inaccurate value.