The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 12 g | 27p¢ |
Every additional 6 g or less | 12p¢ | |
Postcards | Per piece | 40¢ |
Ryan sent 3 postcards and a letter. The letter weighed 20 g. How much did Ryan pay in total? Give your answer in terms of p in the simplest form.