The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 8 g | 27h¢ |
Every additional 4 g or less | 9h¢ | |
Postcards | Per piece | 70¢ |
David sent 4 postcards and a letter. The letter weighed 15 g. How much did David pay in total? Give your answer in terms of h in the simplest form.