Study the table below. It contains data on the municipal waste recycling rates for four Nordic capital cities in 2022.
Calculate the mean municipal waste recycling rate for these four cities. You must show your working.
| Capital City | Municipal waste recycling rate (%) |
|---|---|
| Copenhagen | 48.3 |
| Helsinki | 43.6 |
| Oslo | 41.5 |
| Stockholm | 49.8 |