SOLUTION: Kristine receives a basic monthly salary of Php 18 000 plus a commission of 12% on her total sales.In her recent monthly payday, she received Php 21 000. How Much was her total sal

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Question 1012840: Kristine receives a basic monthly salary of Php 18 000 plus a commission of 12% on her total sales.In her recent monthly payday, she received Php 21 000. How Much was her total sales last month?
Answer by Theo(13342)   (Show Source): You can put this solution on YOUR website!
she earned 21000.

18000 of it was her salary.

that leaves 3000 commission.

3000/.12 = 25000.

she made sales of 25000.

the formula for her pay would be pay = 18000 + .12 * sales

if sales is 25000, then formula for pay becomes:

pay = 18000 + .12 * 25000

simplify to get:

pay = 18000 + 3000

combine like terms to get:

pay = 21000



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