Respuesta :

Let [tex]a[/tex] be the number of hours worked at Job A and [tex]b[/tex] the number of hours at Job B. Then

[tex]a+b=30[/tex]

and

[tex]7.5a+8b=234.50[/tex]

From the first equation,

[tex]b=30-a[/tex]

and substituting this into the second gives

[tex]7.5a+8(30-a)=234.50\implies-0.5a+240=234.50[/tex]

[tex]\implies0.5a=5.50[/tex]

[tex]\implies\boxed{a=11}[/tex]

Answer:

Its called Omae Wa Mou Shindeiru.....then NANI?!

Step-by-step explanation:

and 11 is your answer....

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