Question 538689
Susan is a saleswoman. She is paid a base salary of $1600 a month plus a 4% commission on the sales she makes. What was her sales amount last month if she earned a total of $2487.84 ? 



Let A = Sales Amount

Basic income (B)  = 1600
Rate (R) = 4%
Commission (C) = 4*A/100

Total monthly income (T) = 2487.84




T = B + C
T = B + 4A/100

2487.84 = 1600 + 4A/100
2487.84 - 1600 = 4A/100
887.84  = 4A/100
(887.84)/4  = A/100
A= (221.96)*100
A= 22196


So, the sales amount was $22.196 which is the answer.


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