By how much above the cost should the goods be marked for sale, so that after allowing a trade discount of 20% and a cash discount of 6%, a net gain of 20% on the cost is made?
Suppose, the cost price of good = Rs. 100
Also, let the marked price = Rs. x
Now, since, the net gain is 20% of cost price. So, the selling price (SP),
SP = Cost price + Gain
SP = 100 + (20% of 100)
SP = 100 + 20 = Rs. 120
= [(100 - 6(1/4)]% of (100 - 20)% of x = 120
= (100 - 25/4)% of ( 80)% of x = 120
= 375/4×1/100×(80 x)/100=120
3x/4=120
x=120×4/3 =160
Since, 160 is 60% more than the 100.
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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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