In 1995 a certain store had 1,900 tools in stock that had been purchased for $30 each. If 1,000 of these tools were sold in 1995 for $40 each and the remaining 800 were sold in 1996 for $50 each, how many greater was the gross profit on the tools sold in 1996 than the gross profit on those sold in 1995?  Answers:
A) $0  B) $6,000  C) $8,000  D) $32,000  E) $40,000
The keyword here isGross Profit:   Gross Profit = (Selling Price - Original Price)*(# of Items Sold)   So lets figure out what the Gross Profit for 1995:   GP1995 = (40-30)*(1000)= 
<gadget id="calculator">(40-30)*(1000)</gadget>
<output>10_000</output>
10000   And the Gross Profit for 1996:   GP1996= (50-30)*(900)= 
<gadget id="calculator">(50-30)*(900)</gadget>
<output>18_000</output>
18000   So the difference would be:   18000-10000= 
<gadget id="calculator">18000-10000</gadget>
<output>8_000</output>
8000   ANSWER: $8,000 8000
<result>C</result>
In 1995 a certain store had 1,900 tools in stock that had been purchased for $30 each. If 1,000 of these tools were sold in 1995 for $40 each and the remaining 800 were sold in 1996 for $50 each, how many greater was the gross profit on the tools sold in 1996 than the gross profit on those sold in 1995?