Correct Answer:
C. 4/5
The correct answer is 4/5. When adding fractions with the same denominator, you simply add the numerators and keep the denominator unchanged.
Addition of Like Fractions
- Rule: If the denominators are equal, add the numerators and write the result over the common denominator.
a/c + b/c = (a + b)/c - Applying the Rule:
3/5 + 1/5 = (3 + 1) / 5 = 4/5 - Why Other Options Are Incorrect:
- 2/5: This would be 3/5 − 1/5, not addition.
- 3/5: Adding 0, not 1/5.
- 5/10: 5/10 simplifies to 1/2, which is not the sum. Also, adding denominators (5+5=10) is a common mistake.
Thus, 3/5 + 1/5 = 4/5.