A man sells a horse for Rs.800 and loss something, if he had sold it for Rs.820, his gain would have been trible the former loss. Find the cost price of the horse?
Pick.
A) 605  B) 905  C) 815  D) 805  E) 705
CP = SP + 1CP = SP - g   800 + x = 820 - 3x   4x = 20 =&gt; x = 5   CP = 800 + 5= 
<gadget id="calculator">800 + 5</gadget>
<output>805</output>
805   Answer: 805
<result>D</result>
A man sells a horse for Rs.800 and loss something, if he had sold it for Rs.820, his gain would have been trible the former loss. Find the cost price of the horse?