The cost price of a cow and a horse is 3 lakhs. The cow is sold at 20% profit and horse at 10% loss.Overall gain is Rs.4200. What is the cost price of the cow?
Choose one:  A) 113000  B) 114000  C) 115000  D) 116000  E) 124000
let costs of cow and horse are x,y so x+y=300000------(1)   (x*120/100)+(y*90/100)=304200   120x+90y=30420000------(2).   solve equations (1) and (2)   x=114000   ANSWER:114000
<result>B</result>
The cost price of a cow and a horse is 3 lakhs. The cow is sold at 20% profit and horse at 10% loss.Overall gain is Rs.4200. What is the cost price of the cow?