Algebra-1

To determine the number of shirts, we can set up a system of equations based on the given information.

Let x be the number of shirts and y be the number of trousers.

We know that John bought a total of 12 items. This information can be translated into the equation: x + y = 12

We also know that each shirt costs $20 and each trouser costs $30. Thus, the equation representing the total costs can be written as: 20x + 30y = 320, then

1. Solve the...