Answer:
Step-by-step explanation:
So, first they spend $100
The next week, they spend 20% less than $100, so they spent $80 that week.
The 3rd week, they spend 3/4 of $80, so they spend $60 that week.
Finally, we add the spent money from the 3 weeks (100 + 80 + 60) and get $240. I hope this helps!
