Gold
Q1) Fred wants to buy two
teeshirts. The first shop sells
them for £11.45 each and it is
buy one get one half price.
The second shop sells them
for £10.16 each and there is a
20% off sale. Which is the
better value?

The 2nd case is the better value

Step-by-step explanation:

                                                       £11.45

Case 1:  That would be £11.45 + for the two shirts.  This comes

                                                             2

out to 1.5(£11.45) = £17.175 for two shirts.

Case 2:  Two shirts for £10.16 each comes out to £20.32; multiplying that by (1.00 - 0.20), or (0.80) results in (0.80)(£20.32) = £16.256.

The 2nd case is the better value, as one would get 2 shirts for £16.26, versus 2 shirts for £17.18 in the other case.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column