PSLE The airmail rates to two countries are shown. Elyse sent a letter weighing 93g to Thailand and a letter weighing 45g to Sweden by airmail. How much did she pay altogether?
Mass |
Thailand |
Sweden |
First 50g |
$0.55 |
$1.70 |
Every additional 25g |
$0.25 |
$0.55 |
Mass of the letter to Thailand excluding the first 50 g
= 93 - 50
= 43 g
Sets of additional 25 g of the letter to Thailand
= 43 ÷ 25
= 1 r 18
Sets of additional 25 g and part thereof the letter to Thailand
= 1 + 1
= 2
Amount that Elyse paid for the letter to Thailand
= 0.55 + 2 x 0.25
= 0.55 + 0.50
= $1.05
Amount that Elyse paid altogether
= 1.05 + 1.70
= $2.75
Answer(s): $2.75