In an automobile market of spare parts dealers and workshops, average earning of a spare parts dealer per day is $520 and the average earning of a workshop is $700. Considering there are 40 shops in market and number of spare parts dealer shops exceeds the workshops by 4. What is the average earning of this market consisting of only spare parts dealers and workshops.	Choose one:
A) 535
B) 562
C) 594
D) 601
E) 648
Let the number of workshops be x   number of s.p.d=x+4   x+x+4=40 = 2x=36 = x=18   workshops are 18 in number and spd are 22 in number   Average earning of the market= ((520x22)+(700x18))/40   =(11440+12600)/40   =24040/40= 
<gadget id="calculator">24040/40</gadget>
<output>601</output>
601   Answer: 601
<result>D</result>
In an automobile market of spare parts dealers and workshops, average earning of a spare parts dealer per day is $520 and the average earning of a workshop is $700. Considering there are 40 shops in market and number of spare parts dealer shops exceeds the workshops by 4. What is the average earning of this market consisting of only spare parts dealers and workshops.