Question
PSLE
The airmail rates to two countries are shown. Esther sent a letter weighing 63g to Thailand and a letter weighing 18g to Canada by airmail. How much did she pay altogether?

Mass Thailand Canada
First 20g $0.75 $1.40
Every additional 10g $0.35 $0.50
2 m

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PSLE
The airmail rates to two countries are shown. Esther sent a letter weighing 63g to Thailand and a letter weighing 18g to Canada by airmail. How much did she pay altogether?

Mass Thailand Canada
First 20g $0.75 $1.40
Every additional 10g $0.35 $0.50