Answer:
2480 new movies
Step-by-step explanation:
1) First you need to find out how much money the 400 older movies made.

2) Next subtract that amount from the amount of revenue that the wants.

3) Divide the amount of leftover money by the amount that a new movie costs to rent

This means that in order to reach the desired amount of revenue the store must sell 2480 new movies.
Consider the equation
, it can be expressed as
.
Now, we have to write the equivalent equation.
Since, Equivalent equations are those equations which have exactly same solution. We can say that the two equations are equivalent if solution of one equation is the solution of other equation.
So, consider the equation 
Equivalent equation can be obtained by multiplying the given equation by any number say '2'.
Multiplying both sides of the given equation by '2'.



is the required equivalent equation.
Answer:
Step-by-step explanation: