Find a single discount equivalent to a series of discounts 10%, 20% and 30%
Solution
Let the marked price be 100.
After 10% discount:
Price = 90
After 20% discount:
Price = 90 × 80 / 100 = 72
After 30% discount:
Price = 72 × 70 / 100 = 50.4
Final price = 50.4
Equivalent single discount
= 100 − 50.4
= 49.6%
Correct Answer:
(a) 49.6%
English
10 Questions
20 Marks
12 Mins English English50 Questions100 Marks60 Mins English English10 Questions20 Marks12 Mins EnglishFor different sets of datasets X and Y. correlation coefficient between X and Y, that is R and standard deviation of X and Y, that is, S(X) and S(Y) are given in A-D below. Estimate the covariance between X and Y for each dataset and arrange in ascending order.
A. R= 0.5, S(X)= 8, S(Y)= 10
B. R= 4/7, S(X)= 7, S(Y)= 9
C. R= 0.7, S(X)= 12, S(Y)= 5
D. R= 19/42, S(X)= 14, S(Y)= 6
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