The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 16 g | 24m¢ |
Every additional 8 g or less | 10m¢ | |
Postcards | Per piece | 40¢ |
Oliver sent 4 postcards and a letter. The letter weighed 19 g. How much did Oliver pay in total? Give your answer in terms of m in the simplest form.