The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 10 g | 23n¢ |
Every additional 5 g or less | 7n¢ | |
Postcards | Per piece | 60¢ |
Henry sent 5 postcards and a letter. The letter weighed 17 g. How much did Henry pay in total? Give your answer in terms of n in the simplest form.