Respuesta :
In 1 hour, a machine could make:
[tex]7 \div 4.2 [/tex]
parts
In 28.8 hours, that machine make
[tex]7 \div 4.2 \times 28.8 = 4.8[/tex]
parts
[tex]7 \div 4.2 [/tex]
parts
In 28.8 hours, that machine make
[tex]7 \div 4.2 \times 28.8 = 4.8[/tex]
parts