Given:
a.) 3 kg to 3.5 kg
Transforming this into a fraction, we get:
[tex]\text{ 3 kg to 3.5 kg }\rightarrow\text{ }\frac{3}{3.5}[/tex]The GCF (Greatest Common Factor) of 3 and 3.5 is 0.5, therefore, simplifying the fraction, we divide the numerator and the denominator by its GCF.
[tex]\text{ }\frac{3}{3.5}\text{ = }\frac{\frac{3}{0.5}}{\frac{3.5}{0.5}}\text{ = }\frac{6}{7}[/tex]Therefore, the ratio of the fraction in simplest form is 6/7.