Let the original price of the item be P.
After a 12% increase, the price becomes:
P + (12/100) x P = 1.12P
Now, a 20% discount is announced on the increased price:
1.12P - (20/100) x 1.12P = 0.896P
The actual discount on the original price is:
(P - 0.896P) / P x 100 = 10.4%
Therefore, the actual discount on the original price is 10.4%.
So, the correct answer is (b) 10.4%.
English
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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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A.
B.
C.
D.
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