Respuesta :

Given:

For 12 hours of work, david made $168.

To find the required time to make $238.

Since, it is in direct proportion.

We can write it as,

[tex]\begin{gathered} 12\colon168\Colon x\colon238 \\ x\times168=12\times238 \\ x=\frac{12\times238}{168} \\ x=17 \end{gathered}[/tex]

Hence, the required time to make $238 is 17 hours.

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