Hi Asmaa,
We can solve this equation by following these steps:
Step One: Create a Let Statement
Let x= the number of trips that Sally took
Step Two: Since we know that the total amount of her bus tickets is 240, we can create an equation 240=24x because Total Cost= ($24)(the number of trips taken)
Step Three: Solve our equation
24x=240
x=10
Step Four: Since there are only 7 days in the week, we have to use reason.
Reasoning #1: Since Sally made ten bus trips, we can assume that she worked seven days in the week, and on three days she took multiple trips because 7+3=10
Reasoning #2: If she traveled to work and back home each day, that equals two bus trips per day. Since we have a total of ten trips, we could say Sally worked for five days of the week because 10/2=5.
Reread the question that was given to you and decide for yourself which reasoning makes most sense in context.
Best,
Star
