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Author Topic: can any 1help in solving this problem  (Read 1371 times)

sun1

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can any 1help in solving this problem
« on: April 10, 2010, 07:52 AM »
The total sales of a firm selling products A and B are given by the
relationships V=a+bx+cy . The data for 3 months period is given below:
Months  Volume of sales(V) (Rs.)   x     y
April       15,000                                3   4
May       18,000                                5   2
June      20,000                                6   3
Using determinant method, determine the sales in the next month when it sells 8
units of x and 5 units of y . If a, b, c are all positive and the pth, qth and rth terms
of a Geometric Progression (GP), then prove that
[loga  p   1
 logb    q  1
 logc     r   1 ]=0
 

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