Solution

Answer Of Q.1

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Answer of Q.No. 02

For an inverse of Matrix it is necessary the number of rows must be equal to number of rows. In this matrix number of rows are 4 & number of Column are 3. so it is not possible the inverse of give matrix.

Answer of Q.No.03

1-Write the value of first column in cell 5 in A: 4, 7 in A: 5 and 1 in A: 6

2-Simlarly the value 2nd Column will be written 9 in B: 4, 1 in B: 5 and 2 in B: 6

3-Finally the value of 3rd column will put as 3 in C: 4, 8 in C: 5 and 4 in C: 6

4-Click the cell A: 7 and drag the mouse keeping press left button of Mouse to C: 9

5-Then press F2 in A: 7 and write the formula =MINVERSE (A: 4: C: 6)

6-After writing formula Press CTR+SHIFT+ENTER keys simultaneously the formula will appear in formula as {=MINVERSE (A: 4: C: 6)} which shows that job has been done in correct manner.

Answer of Q No.05

Selling price = Cost+ (cost * % of mark up)

=2400+ (2400*.4)

=2400+960

=3360

So the mark up is =960

Selling price =3360

Answer Q.No.06

First we calculate the Markup

Mark up =% age of mark up * Selling Price

=.48*3200=1536

Now the cost

Price is = Selling Price-Mark Up

=3200-1536=1664

Answer Q.No.7

Equivalent Discount Rate = (1-d1) (1-d2) (1-d3)

= 100(1-5%) (1-7%) (1-11%)

=100(.95)(.93)(.89)

=78.63

% Discount =100-78.63

=21.37%

Answer Q.No.8

Selling Price = Cost+(Cost*%of Mark Up)

=2300+(2300*.38)

=2300+874

=3174

Selling Price after mark down =Selling price-(selling price*%of mark down)

=3174-(3174*.30)

=3174-952.20=2221.80