Write an equation to find her total sales if her total earnings for the last two weeks were 500

Question

Writing expressions and equations

Comments

Insufficient information. We need figures on how her earnings are related to her sales.

Let's say her wages are made entirely from her commission on sales, and she receives 15% commission. If her sales are $20000 then her wages are $20000*0.15=$3000.

Answer 1

The general answer is given by W=FX+CS where W=wages=500, F=fixed guaranteed part of the weekly wage, C is the commission as a fraction, and S is the value of sales over two weeks. X=2, the number of weeks. So 500=2F+CS; 500-2F=CS; S=(500-2F)/C.

EXAMPLE

C=15%, so C=0.15; F=100. S=(500-200)/0.15=300/0.15=30000/15=2000.