A man sells a horse for Rs.800 and loses something, if he had sold it for Rs.980, his gain would have been double the former loss. Find the cost price of the horse?

A. Rs.900
B. Rs.875
C. Rs.850
D. Rs.860

Explanation:

CP = SP + 1CP = SP – g

800 + x = 980 – 2x

3x = 180 => x = 60

CP = 800 + 60 = 860