Final answer:
Cristy used (1/6) liter more oil in the morning than in the afternoon after comparing the fractions with a common denominator.
Step-by-step explanation:
To find out how much more oil Cristy used in the morning than in the afternoon, we must first make sure the fractions have a common denominator to compare them directly. The fraction representing the oil used in the morning is (10/12), which simplifies to (5/6). The fraction for the afternoon is (2/3), which can be written with a denominator of 6 by multiplying the numerator and denominator by 2, becoming (4/6). Now both fractions have a common denominator, we can compare them:
- Morning oil: (5/6) liter
- Afternoon oil: (4/6) liter
To determine how much more oil was used in the morning, subtract the fraction of oil used in the afternoon from the fraction of oil used in the morning:
(5/6) - (4/6) = (1/6) liter
Therefore, Cristy used (1/6) liter more oil in the morning than in the afternoon.