Problem of the Week - Upper Elementary - Sept. 13 to Sept. 19, 2020

Upper Elementary:

Question: William used to drink 6 cans of soda per day, but he decided to replace his soda with bottled water. If a can of soda costs $0.85 and a bottle of water costs $0.75, then how much money does Will save each week by swapping from soda to water? 

Answer:  $4.20

Solution:  Each soda costs $0.10 more than a bottle of water. So, each day, William saves $0.10 × 6 = $0.60. In a week, he saves $0.60 × 7 = $4.20.