The cost of 4 shirts of one type, 3 T-Shirts on the anothe type and 2 trousers of one type - Maths -

Question

The cost of 4 shirts of one type, 3 T-Shirts on the anothe
type and 2 trousers of one type is 2700 Rs The cost of 1 shirt same
type, 2T- shirts of the type mention above and 2 trousersof the
type is Rs 1300 the cost of 6 shirts ,2 T - Shirts and 3 trousers
of the same type is Rs 3500/- find the cost of each item by matrix
method and adjoint method

Neha Sethi · Accepted Answer

Dear student

One type
another type of shirts
trousers

4
3
2

1
2
2

6
2
3

So, we get the matrix as follow:432122623270013003500=10800+3900+70002700+2600+700016200+2600+10500=217001230029300So, cost of each item respectively is given by:Rs 21700,Rs 12300,Rs 29300Above Answer by Matrix methodAdjoint method:If A=aij is  a square matrix of order n  and Cij denote the cofactor of aijin A, then  the transpose of the matrix of cofactors of elements of A is called the adjoint of A and is denoted by adj
Ai e  adj
A=CijTIf A=a11a12a13a21a22a23a31a32a33, then adj
A=C11C21C31C12C22C32C13C23C33So,similalrly try by this method on your own 
Regards