Question 17
Alex, Ben, Cindy and Daryl go shopping. After Cindy spends 40 dollars, she still has 40 dollars more than Alex. If Cindy gives Daryl 40 dollars, she would still have 40 dollars more than Daryl. If Ben gives Daryl 40 dollars, Ben would then have 40 dollars less than Daryl. How much more money does Ben have than Alex at the start? Enter the difference in dollars.
Treat the spending and the two transfers as three separate hypothetical situations, each starting from the original amounts, as in the source solution. They are not consecutive transactions.
Treat the spending and the two transfers as three separate hypothetical situations, each starting from the original amounts, as in the source solution. They are not consecutive transactions.