Answer:
To determine the sales price of the sweaters the shirts and the pants, we need these equations: 
 ,
, 
 and
 and 

Explanation:
Consider the provided information.
It is given that x represents sweaters, y represents shirts and z represents pants.
The cost of the 2 sweaters , 5 shirts and 3 pairs of pants is 172. 
Therefore, the required system of equation is:

The cost of the 5 sweaters and 8 pairs of pants is 269. 

The cost of 4 shirts and 1 pair of pants is 74 

To determine the sales price of the sweaters the shirts and the pants, we need these equations: 
 ,
, 
 and
 and 
