The mass of the frog will be 0.27 kilograms.
Explanation
The weight of the frog is [tex]\frac{3}{5}[/tex] pound.
As 1 pound = 0.45 kilograms,
So for finding the mass of the frog in kilograms, we need to multiply [tex]\frac{3}{5}[/tex] by 0.45
Thus, [tex]\frac{3}{5}*0.45= \frac{1.35}{5}=0.27[/tex]
So, the mass of the frog will be 0.27 kilograms.