A trader purchased two colour televisions for a total of Rs. 35000. He sold one colour television at 30% profit and the other 40% profit. Find the difference in the cost prices of the two televisions if he made an overall profit of 30%?	Pick.
A) Rs. 28985
B) Rs. 40985
C) Rs. 20985
D) Rs. 21000
E) Rs. 30985
Let the cost prices of the colour television sold at 30% profit and 40% profit be Rs. x and Rs. (35000 - x) respectively.   Total selling price of televisions = x + 30/100 x + (35000 - x) + 40/100 (35000 - x)   =&gt; 130/100 x + 140/100 (35000 - x) = 35000 + 30/100 (35000)   x = 27985   35000 - x = 6985   Difference in the cost prices of televisions = Rs. 20985   ANSWER:Rs. 20985
<result>C</result>
A trader purchased two colour televisions for a total of Rs. 35000. He sold one colour television at 30% profit and the other 40% profit. Find the difference in the cost prices of the two televisions if he made an overall profit of 30%?