The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 12 g | 24s¢ |
Every additional 6 g or less | 5s¢ | |
Postcards | Per piece | 70¢ |
Oliver sent 3 postcards and a letter. The letter weighed 20 g. How much did Oliver pay in total? Give your answer in terms of s in the simplest form.