Step 1:

The manager of a fish store has water is of gallons.

Let be represents the number of gallons.

He fills aquarium with salt and water that is of gallons of water.

He need to fill an aquarium with gallons of water that is salt.

Write a system of linear equations that you can use to determine how many gallons of each type

of salt water the manager should combine.

The expression is

The linear equation of he need to fill gallons of each type of salt water is

Step 2:

Solve the equation.

number of gallons of each type of salt water the manager should combined.

Solution :

(a) He need to fill gallons of each type of salt water of linear equation is

(b) number of gallons of each type of salt water the manager should combined.