At a certain supplier, a machine of type A costs $24,000 and a machine of type B costs $50,000. Each machine can be purchased by making a 20 percent down payment and repaying the remainder of the cost and the finance charges over a period of time. If the finance charges are equal to 40 percent of the remainder of the cost, how much less would 2 machines of type A cost than 1 machine of type B under this arrangement? Choose the correct choice:  A) $2,640  B) $11,200  C) $12,000  D) $12,800  E) $13,200
Total Cost of 2 Machines of Type $2,640   = 20% of (Cost of 2 machine $2,640) + remainder + 40 % remainder   = 20% of 48000 + (48000 - 20% of 48000) + 40% of (48000 - 20% of 48000)   = 63360   Total Cost of 1 Machine of Type B   = 20% of (Cost of 1 machine B) + remainder + 40 % remainder   = 20% of 50000 + (50000 - 20% of 50000) + 40% of (50000 - 20% of 50000)   = 66000   Diff = 66000 - 63360= 
<gadget id="calculator">66000 - 63360</gadget>
<output>2_640</output>
2640   Hence, $2,640.
<result>A</result>
At a certain supplier, a machine of type A costs $24,000 and a machine of type B costs $50,000. Each machine can be purchased by making a 20 percent down payment and repaying the remainder of the cost and the finance charges over a period of time. If the finance charges are equal to 40 percent of the remainder of the cost, how much less would 2 machines of type A cost than 1 machine of type B under this arrangement?