First, let's calculate the sums for both Column A and Column B.
Column A: \( 0.7 + 1.8 \)
Converting to fractions if necessary:
- \( 0.7 = \frac{7}{10} \)
- \( 1.8 = \frac{18}{10} \)
Now we can add them: \[ 0.7 + 1.8 = \frac{7}{10} + \frac{18}{10} = \frac{25}{10} = 2.5 \]
Column B: \( 1 + 0.25 \)
Converting \( 0.25 \) to a fraction:
- \( 0.25 = \frac{1}{4} \)
Now we can add: \[ 1 + 0.25 = 1 + \frac{1}{4} = \frac{4}{4} + \frac{1}{4} = \frac{5}{4} \]
Now, we can summarize the results:
- The sum of Column A is \( 2.5 \).
- The sum of Column B is \( \frac{5}{4} \).
Both \( 2.5 \) and \( \frac{5}{4} \) are rational numbers.
Now, let's analyze the statements:
- Only Column A has a rational sum. (False)
- Only Column B has a rational sum. (False)
- Both Column A and Column B have rational sums. (True)
The correct choice is: Statement 3 is true. Both Column A and Column B have rational sums.