PSLE The airmail rates to two countries are shown. Tiffany sent a letter weighing 64g to Malaysia and a letter weighing 24g to India by airmail. How much did she pay altogether?
Mass |
Malaysia |
India |
First 30g |
$0.55 |
$1.30 |
Every additional 15g |
$0.25 |
$0.35 |
Mass of the letter to Malaysia excluding the first 30 g
= 64 - 30
= 34 g
Sets of additional 15 g of the letter to Malaysia
= 34 ÷ 15
= 2 r 4
Sets of additional 15 g and part thereof the letter to Malaysia
= 2 + 1
= 3
Amount that Tiffany paid for the letter to Malaysia
= 0.55 + 3 x 0.25
= 0.55 + 0.75
= $1.30
Amount that Tiffany paid altogether
= 1.30 + 1.30
= $2.60
Answer(s): $2.60