Answer
\[\$10,000\].
Work Step by Step
Salesperson earns per week \[=\$300\].
Let sales for the week be x.
Commission on sales is\[\frac{5}{100}\times x\].
Earnings of salesperson for the week is \[\$800\].
Therefore,
\[800=300+\frac{5}{100}\times x\]
Subtract 300 from both sides:
\[300+\frac{5x}{100}-300=800-300\]
Multiply by \[\frac{100}{5}\] on both sides:
\[x=\frac{500\times 100}{5}\]
Thus,\[x=10,000\].
Hence, sales for the week is\[\$10,000\].
