Final answer:
The fraction equivalent to one half 1/2 is 5/10.
Step-by-step explanation:
To scale the numerator and the denominator up by a factor of 5 and write a fraction equivalent to 1/2, we multiply both the numerator and the denominator by 5.
This gives us 5/10, which is equivalent to 1/2.
The factor of 5 is applied to both the numerator and the denominator to maintain the ratio of the fraction.