The table below show the customers an arcade had leading up to the weekend.
Day | Customers |
Tuesday | 141 |
Wednesday | 159 |
Thursday | 115 |
Friday | 146 |
| 561 |
Over the weekend they had 9 times as many customers as they did before in the previous 4 days. How many more customers did they have over the weekend than they had in the previous 4 days?