on saturday morning, marc had a quarter of his weekly allowance left. he spent a total of 6.50 on bus fares and freshly squeezed orange juice on saturday afternoon. he then has 2.25 left. how much was his weekly allowance
Since a quarter accounts for 1/4 of a whole, you can multiply $6.50 by 4, which is equal to $26. The information given in the last sentence is irrelevant to the solving process.
