The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 20 g | 23n¢ |
Every additional 10 g or less | 12n¢ | |
Postcards | Per piece | 60¢ |
Tommy sent 4 postcards and a letter. The letter weighed 33 g. How much did Tommy pay in total? Give your answer in terms of n in the simplest form.