The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 20 g | 24k¢ |
Every additional 10 g or less | 10k¢ | |
Postcards | Per piece | 40¢ |
Wesley sent 4 postcards and a letter. The letter weighed 35 g. How much did Wesley pay in total? Give your answer in terms of k in the simplest form.