# A man bought a horse and cart for rs 3000. He sold the horse at gain of 20% and cart at loss of 10%, thereby gaining 2% on the whole.find the cost of the horse

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20% of x-10% of(3000-x)=2% of 3000

=>x/5-(3000-x)/10=60

=>2x-3000+x=600=3x+3600

=>x=1200

=>hence,C.P of the horse is 1200..............................