PSLE The airmail rates to two countries are shown. Wendy sent a letter weighing 94g to Thailand and a letter weighing 48g to Sweden by airmail. How much did she pay altogether?
Mass |
Thailand |
Sweden |
First 50g |
$0.85 |
$1.20 |
Every additional 25g |
$0.45 |
$0.30 |
Mass of the letter to Thailand excluding the first 50 g
= 94 - 50
= 44 g
Sets of additional 25 g of the letter to Thailand
= 44 ÷ 25
= 1 r 19
Sets of additional 25 g and part thereof the letter to Thailand
= 1 + 1
= 2
Amount that Wendy paid for the letter to Thailand
= 0.85 + 2 x 0.45
= 0.85 + 0.90
= $1.75
Amount that Wendy paid altogether
= 1.75 + 1.20
= $2.95
Answer(s): $2.95