self Maths Puzzle

A man purchased a horse and a cow for Rs. 5000. He sells the horse at 20% profit and the cow at 10% loss. If he gains 2% on the whole transaction, the cost of the horse is

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self Other Question

A mixture of 70 litres of wine and water contains 10% water. How much water should be added to make 25% water in the resulting mixture? In an examination, a student gets 3 marks for every correct answer and loses 1 mark for every wrong answer. If he scores '0' marks in a paper of 100 questions, how many of his answers were correct?