how to solve?

Question

At a close-out sale, an appliance store sold microwave ovens and toaster ovens, with total sales revenue amounting to $1,616. The microwave ovens sold for $80 each, while the toaser ovens sold for $32 each. If 25 total ovens were sold, how many microwaves sold?

Answer 1

We don't know the total number of microwaves and toaster ovens sold. Any unknown quantity may be represented by variables. Let x = the number of microwaves and y = the number of toaster ovens. Since a total of 25 ovens were sold, then this may be written as:

 

x + y = 25

 

Using the information in the problem about the unit cost for each type of oven, the total cost may be expressed as:

 

80x + 32y = 1616

 

Now, we have a system of equations that we can solve by substitution. You should able to take it from here, Shania.