A salesperson received a commission of 3 percent of the sale price for each of the first 100 machines that she sold and 4 percent of the sale price for each machine that she sold after the first 100. If the sale price of each machine was $10,000 and the salesperson received a $40,000 commission, how many machines did she sell? Choose the most appropriate option
A) 90	B) 103	C) 105	D) 115	E) 125
First 100 machines = 3% commission = 0.03*100*10000= 
<gadget id="calculator">0.03*100*10000</gadget>
<output>30_000</output>
30000   Commission from sale of next machines= 40000 - 30000= 
<gadget id="calculator">40000 - 30000</gadget>
<output>10_000</output>
10000   So 25 more machines..   Total= 125 machines   IMO 125...
<result>E</result>
A salesperson received a commission of 3 percent of the sale price for each of the first 100 machines that she sold and 4 percent of the sale price for each machine that she sold after the first 100. If the sale price of each machine was $10,000 and the salesperson received a $40,000 commission, how many machines did she sell?