Pretend you and Will owe a friend instead of the bank, pull out your wallets and pay your debts. Who has to take out more money from their wallet? Of course, Will has to take out $9.25 more than Chaz.
She wants the truck for one day, which will cost $45. We don't know how far the truck is traveling so that is the variable. She cannot spend more than $70, since that is her budget.