Resposta :
Bom Dia !!!
[tex]\Rightarrow Usarei\ a\ regra\ de\ 3:\\\\\frac{400}{x} = \frac{100}{40}\\\\100x = 16.000\\\\x = \frac{16.000}{100} \\\\{\boxed{\boxed{\boxed{\sf x = 160}}}[/tex]
Espero ter ajudado :-)
Att: LDC
Bom Dia !!!
[tex]\Rightarrow Usarei\ a\ regra\ de\ 3:\\\\\frac{400}{x} = \frac{100}{40}\\\\100x = 16.000\\\\x = \frac{16.000}{100} \\\\{\boxed{\boxed{\boxed{\sf x = 160}}}[/tex]
Espero ter ajudado :-)
Att: LDC