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George is a salesperson in a jewelry store and earns $100 per week, plus 10% of his weekly sales. If George makes $425 in one week , what are his sales for that week? $5,250$4,250$4,000$3,250

Sagot :

Since George earns $100 per week plus 10% of his weekly sales

Assume that his weekly sales are $x

Then he earns 100 + 10% of x

Since he makes $425 in a week, then

[tex]\begin{gathered} 100+\frac{10}{100}\times x=425 \\ 100+0.1x=425 \end{gathered}[/tex]

Subtract 100 from both sides

[tex]\begin{gathered} 100-100+0.1x=425-100 \\ 0.1x=325 \end{gathered}[/tex]

Divide both sides by 0.1

[tex]\begin{gathered} \frac{0.1x}{0.1}=\frac{325}{0.1} \\ x=3250 \end{gathered}[/tex]

His sales for that week are $3250

The answer is D

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