Question
The table shows the postage charges for sending letters to Canada. Xuan posted a letter with a mass of 81 g. How much did she pay for the postage?

Mass Cost
First 20 g $1.40
Every additional 15 g
or part thereof
45¢
2 m

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The table shows the postage charges for sending letters to Canada. Xuan posted a letter with a mass of 81 g. How much did she pay for the postage?

Mass Cost
First 20 g $1.40
Every additional 15 g
or part thereof
45¢