The marked price of the item is Rs. 400.
Price after the first discount:
\[ \text{Price after first discount} = 400 \times (1 - 0.30) = 400 \times 0.70 = 280 \]
Price after the second discount:
\[ \text{Price after second discount} = 280 \times (1 - 0.20) = 280 \times 0.80 = 224 \]
Price after the third discount:
\[ \text{Price after third discount} = 224 \times (1 - 0.20) = 224 \times 0.80 = 179.2 \]
Price after the fourth discount:
\[ \text{Price after fourth discount} = 179.2 \times (1 - 0.10) = 179.2 \times 0.90 = 161.28 \]
The actual selling price of the item is Rs. 161.28.
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 |