Question
The table shows the postage charges for sending letters to Vietnam. Opal posted an envelope with a mass of 68 g. How much did she pay for the postage?

Mass Cost
First 25 g $1.80
Every additional 20 g
or part thereof
30¢
2 m

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The table shows the postage charges for sending letters to Vietnam. Opal posted an envelope with a mass of 68 g. How much did she pay for the postage?

Mass Cost
First 25 g $1.80
Every additional 20 g
or part thereof
30¢