Answer :

To work out how much Luz earns, you simply have to follow 400/40=10, so she earns $10/hour. We can therefore establish that if she works for 6 hours, she'll earn $60.

For this case we can make the following rule of three:

$ 400 -------------------> 40 hours

x ------------------------> 6 hours

From here, we clear the value of x.

We have then:

[tex] x = (\frac{6}{40}) * (400)

x = 60
[/tex]

Therefore, Luz earns $ 60 for 6 hours of work.

Answer:

she earns $ 60 for 6 hours of work