A salesperson earns a $200 per week in base pay plus onetwentieth of his/her dollar sales volume. Find the salesperson’s dollar sales volume if he/she earned $785 for the week (before taxes).
Let x be the person's sales volume.
Let y the total money that he makes weekly
y = (1/5)* x + 200
Substitute 785 for y and solve for x.
785 = (1/5)* x + 200
Subtract 200 from both sides of the equations.
785  200 = (1/5) * x + 200  200
585 = (1/5) * x
Multiply both sided by 5
585 * 5 = 5 * (1/5) * x
2925 = 1 * x
2925 = x
The sales volume is $2935
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