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| PAGE: 135 | SET: Exercises | PROBLEM: 1 |
Tasha orders 
ounces of soup of cost 
per ounce.
Let 
is weight of the salad and costs 
per ounce.
Make a table:
|
Ordered items |
Weight | Cost |
Total cost |
| Soup | |
|
 |
| Salad | |
|
 |
| Total |  |
Observe the table:
Total cost of soup plus Total cost of salad equals Total cost of the lunch
.
.
Solve equation.
(Original equation)
(Simplify)
(Subtract 
from each side)
(Apply additive inverse property : 
)
(Divide each side by 
)
(Cancel common terms)
Therefore, Tasha has ordered 
ounces of salad for lunch.
Tasha has ordered ounces of salad for lunch.
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