The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 12 g | 29b¢ |
Every additional 6 g or less | 10b¢ | |
Postcards | Per piece | 80¢ |
Cody sent 3 postcards and a letter. The letter weighed 27 g. How much did Cody pay in total? Give your answer in terms of b in the simplest form.