S.I. = Rs. 106 Suppose that the sum lent at 6% interest rate is Rs. x.
Now, according to question,
(x×6×1)/100 +(1550−x×8×1)/100=106
6x+1550×8−8x=10500
2x=12400−10600
2x=1800
x= Rs.900
Money in 8% scheme : 1550-x=Rs 650
The sum lent out at 8% is Rs650 and at 6% is Rs900
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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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