A merchant purchased 3 different varieties of rice namely P, Q and R at 15/kg, 25/kg and 30/kg. He then mixed these 3 different varieties of rice in the ratio of 3 : 5 : 2. At what price he must sell 1 kg of the mixed rice so as to make a net profit of 25%?

The correct answer is (D);28.75

A merchant purchased 3 different varieties of rice namely P, Q and R at 15/kg, 25/kg and 30/kg.

List-I	List-II
(A) Confidence level	(I) Percentage of all possible samples that can be expected to include the true population parameter
(B) Significance level	(III) The probability of making a wrong decision when the null hypothesis is true
(C) Confidence interval	(II) Range that could be expected to contain the population parameter of interest
(D) Standard error	(IV) The standard deviation of the sampling distribution of a statistic