Posted by Chris on Thursday, February 3, 2011 at 4:02pm.
Karen can be paid in one of two ways for selling insurance policies:
Plan A:A salary of $750 per month, plus a commission of 10% of sales.
Plan B:A salary of $1000 per month, plus a commission of 8% of sales in excess of $2000.
For what amount of monthly sales is plan A better than plan B if we can assume that sales are always more than $2000?

Math  helper, Thursday, February 3, 2011 at 4:55pm
Plan A: Salary $750 + .10 of sales
Plan B: Salary $1,000 + .08 of sales > $2,000
x = dollar amt of sales
750 + .10x > 1000 + .08(x  2000)
750 + .10x > 1000 + .08x  160
750 + .10x > 840 + .08x
0.02x > 90
x > 4500
Plan A better when sales > $4500

Math  Chris, Thursday, February 3, 2011 at 5:50pm
That was a huge help. Thank you!!!

Math  helper, Thursday, February 3, 2011 at 6:47pm
You're welcome :)
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