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 $45,000 commission, how many machines did she sell?	Choose the correct choice from the following:
A) 140	B) 103	C) 105	D) 115	E) 120
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= 46000 - 30000= 
<gadget id="calculator">46000 - 30000</gadget>
<output>16_000</output>
16000   So 40 more machines..   Total= 140 machines   IMO 140..
<result>A</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 $45,000 commission, how many machines did she sell?