SOLUTION: Julie earned $25. This is 5 times as much as what Lisa earned. How much did Lisa earn?

There are two ways to solve the problem and to get the answer.



One way is simply say that Lisa earned   dollars = 5 dollars.



Another way is to introduce the unknown x = the amount Lisa earned.


Then from the condition, you have this equation

    5x = 25,


which gives  

     x =  = 5 dollars.     ANSWER