The airmail rates to a country are shown.
Type | Mass | Cost |
Letters |
First 20 g | 20y¢ |
Every additional 10 g or less | 12y¢ | |
Postcards | Per piece | 50¢ |
Liam sent 5 postcards and a letter. The letter weighed 46 g. How much did Liam pay in total? Give your answer in terms of y in the simplest form.