Susan is paid $900 a month plus a commission of 15% on all sales.  Find the amount of sales she needs to receive a total income of $2,400 for one month.

Expert Answers

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Let us assume the amount of sales to be $P.


So her income is based on $900 and 15% of the commision of sales which is related to 15% of the amount $P.


`900+15/100*P = 2400`

        `15/100*P = 2400-900`

              ` P = 1500*100/15`

              `P = 10000`


So the amount of sales is $10000.

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