The table shows the bank balance of four students at the end of the month.
| Student | Balance |
|---|---|
| Sam | −£12-£12−£12 |
| Kim | £40£40£40 |
| Leo | −£35-£35−£35 |
| Mia | £15£15£15 |
Write down the name of the student with the lowest bank balance.
Work out the difference between the balance of Sam and the balance of Mia.
