Respuesta :

tonb

Answer:

13/28 kg

Step-by-step explanation:

Convert to 28 in the denominator.

[tex]\frac17 \cdot (3+\frac14) = \frac37+ \frac{1}{28} = \frac{3\cdot4}{7\cdot4}+ \frac{1}{28} = \frac{12}{28}+ \frac{1}{28} = \frac{13}{28}[/tex]