Question

In a shop a the cost of 4 shirts and 4 pair of trousers and 2 hats is $660. The cost of 9 shirts and 9 pair of trousers and 6 hats is $1,399 what’s the cost of 1 shirts and 1 pair of trousers

Answer 1

$193.67

Explanation:

Let x = shirts

Let y = trousers

Let z = hat

4x + 4y + 2z = 660

9x + 9y + 6z = 1399

Divide the second equation by 3.

3x + 3y + 2z = 466.33

Subtract both equations .

4x + 4y + 2z = 660

3x + 3y + 2z = 466.33

x + y = 193.67

So 1 shirt and 1 trouser will be $193.67