The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 20 g | 20z¢ |
Every additional 10 g or less | 11z¢ | |
Postcards | Per piece | 90¢ |
Oliver sent 4 postcards and a letter. The letter weighed 22 g. How much did Oliver pay in total? Give your answer in terms of z in the simplest form.